AU2005244450B2

AU2005244450B2 - Medicaments containing N-sulfamoyl-N'-arylpiperazines for the prophylaxis or treatment of obesity and related conditions

Info

Publication number: AU2005244450B2
Application number: AU2005244450A
Authority: AU
Inventors: Jochen Antel; Michael Firnges; Peter-Colin Gregory; Dania Reiche; Uwe Reinecker; Uwe Schoen; Harald Waldeck; Michael Wurl
Original assignee: Solvay Pharmaceuticals GmbH
Current assignee: Abbott Products GmbH
Priority date: 2004-05-19
Filing date: 2005-05-18
Publication date: 2010-08-19
Anticipated expiration: 2025-05-18
Also published as: RU2395503C2; EP1750712A2; CA2567166A1; AU2005244450A1; CN1997370B; BRPI0510137A; IL178903A0; MXPA06013299A; JP2007538054A; CN1997370A; WO2005110413A2; WO2005110413A3; NO20065835L; RU2006144812A

Description

WO 2005/110413 PCT/EP2005/052281 1 Solvay Pharmaceuticals GmbH 30173 Hannover Medicaments containing N-sulfamoyl-N'-arylpiperazines for the prophylaxis or treatment of obesity and related conditions The present invention relates to known and novel N-sulfamoyl-N'-arylpiperazines and their physiologically compatible acid addition salts and to pharmaceutical composi tions or medicaments containing these compounds for the prophylaxis or treatment of obesity and related conditions. Some N-sulfamoyl-N'-arylpiperazines and their uses as herbicides are described in German patent application published as DE-OS 1964441 (equivalent to US patent No. 3,709,677). Similar compounds and their uses as insecticides and acaricides are also described in document WO 95/09151. Document WO 94/07867 discloses substituted 4-pyrimidine derivatives as inhibitors of sorbitol dehydrogenase, useful for treating or preventing diabetic complications in a mammal. European patent application EP 0 470 616 A2 teaches substituted 4-pyrimidine de rivatives useful as screening reagents for aldose reductase inhibitors. International patent application WO 03/075929 provides inhibitors of histone deace tylase useful for the treatment of e.g. cancer and psoriasis, which may comprise certain N-sulfamoyl-N'-arylpiperazines. Intermediates for synthesizing said compounds are also disclosed. US patent No. 2,748,125 discloses 1-substituted 4-sulfamylpiperazines with anti convulsant activity. J.M. McManus et al. (J Med Chem 8 (1965) 766-776) teach sulfamylurea hypogly cemic agents. A method of discovering compounds suitable for the treatment and/or prophylaxis of obesity by inhibiting lipogenesis via the inhibition of carbonic anhydrases in mammals and humans is known from document WO 02/07821.

WO 2005/110413 PCT/EP2005/052281 2 It was an object of the present invention to provide novel medicaments for the treat ment and/or prophylaxis of obesity and its concomitant and/or secondary diseases or conditions, which are very effective and can be obtained in simple manner. It has now surprisingly been found that certain novel and known N-sulfamoyl-N' arylpiperazines or their physiologically compatible acid addition salts are suitable for the treatment and/or prophylaxis of obesity and its concomitant and/or secondary diseases or conditions. According to the invention, an N-sulfamoyl-N'-arylpiperazine of general Formula I 0 Ar-N N-S-NH I 0 wherein Ar is monocyclic or bicyclic C6o-aryl, whose ring carbon atoms are optionally replaced one to three times by nitrogen, oxygen and/or sulphur, and/or whose C6.1 0 -aryl ring system optionally contains three to five double bonds, and/or whose Co10-aryl ring system is optionally substituted by one, two or three substitu ents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, tri fluoromethyl, cyano, nitro, pyrrolidinyl, C 1 --alkyl, C 14 -alkoxy, Co&-alkoxyphenyl,

C

1 --alkylthio, C 2 4-alkanoyl, CI--alkyloxycarbonyl, C 1 --alkylsulfonyl; and two oxy gen atoms which are bonded to two adjacent carbon atoms of the Ceno-aryl ring system and which are bridged by C 1

-

2 -alkylen; or whose Cego-aryl ring system is substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C 1 4 alkyl, C14-alkoxy, C 14 -alkylthio, C 24 -alkanoyl, C14-alkyloxycarbonyl, C 14 -alkyl sulfonyl; two oxygen atoms which are bonded to two adjacent carbon atoms of the Ce6io-aryl ring system and which are bridged by C 1

-

2 -alkylen; or whose Cr.10-aryl ring system is substituted by thienyl, naphthyl, pyridyl; phenyl or benzyl, each of which phenyl or benzyl being optionally substituted in the phenyl ring by one, two or three substituents which may be the same or different and WO 2005/110413 PCT/EP2005/052281 3 which may be selected from halogen, trifluoromethyl, cyano, Cw.

6 -alkyl, C-alkoxy or C-alkylsulfonyl; or its physiologically compatible acid addition salts can be used for the treatment and/or prophylaxis of obesity and its concomitant and/or secondary diseases or conditions. More specifically, in compounds of Formula I Ar is phenyl, optionally substituted by one, two or three substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C-alkyl, C alkoxy, C-alkoxyphenyl, C-alkylthio, C 24 -alkanoyl, C-alkyloxycarbonyl, C 1 w alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by Cw- 2 -alkylen; or is phenyl substituted by phenyl or benzyl, each of which optionally being substituted in the phenyl ring by one or two substituents which may be the same or different and which may be selected from halogen, trifluoromethyl, C 1 w-alkyl and C 14 -alkoxy; or is naphthyl; pyridyl; pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; 1,2,3,4-tetrahydroisoquinolinyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5-a]pyrimidinyl, each being optionally substituted by one or two substitu ents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C-alkyl, C1w-alkoxy and C-alkyloxycarbonyl. Where in the compounds of Formula I, la and/or lb or in other compounds de scribed within the context of the present invention substituents are or contain C 1 w-alkyl or Cw.

6 -alkyl, these may each be straight-chain or branched and preferably be methyl. Where substituents in compounds of Formula I stand for halogen, fluorine, chlorine, bromine or iodine are suitable. Fluorine and chlorine are preferred. Where substituents contain C 2 w-alkanoyl, this may be straight-chain or branched. Acetyl is preferred as C2w alkanoyl. Ar preferably stands for optionally substituted phenyl; pyridyl, in particular 2-pyridyl or 4-pyridyl; pyrimidinyl, in particular 2-pyrimidinyl or 5-pyrimidinyl; naphthyl or quinolinyl. Phenyl, pyridyl and pyrimidinyl are more preferred. Where Ar is optionally substituted phenyl, halogen, C 4 -alkyl, C4-alkoxy, trifluoro methyl, cyano, nitro and C-alkylsulfonyl are preferred substituents. More preferred are WO 2005/110413 PCT/EP2005/052281 4 halogen, C 1 --alkyl, C1A-alkoxy and trifluoromethyl. Unsubstituted phenyl is a preferred alternative. Where Ar is optionally substituted pyridyl; pyrimidinyl; naphthyl; quinolinyl; isoquino linyl; 1,2,3,4-tetrahydroisoquinolinyl; indoly or isoindolinyl, halogen, trifluoromethyl, cyano, C 1 --alkyl and C 1 --alkoxy are preferred substituents. Particularly preferred compounds which may be used according to the invention and which are partly novel, are selected from the group consisting of 4-phenyl piperazine-1-sulfonic acid amide (= N-sulfamoyl-N'-phenylpiperazine); 4-(2-chloro phenyl)-piperazine-1-sulfonic acid amide; 4-(2-methoxy-phenyl)-piperazine-1-sulfonic acid amide; 4-pyridin-4-yl-piperazine-1-sulfonic acid amide; 4-pyrimidin-2-yl-piperazine-1 sulfonic acid amide; 4-(4-fluoro-phenyl)-piperazine-1-sulfonic acid amide; 4-(4-chloro-3 trifluoromethyl-phenyl)-piperazine-1-sulfonic acid amide and 4-(3-chloro-5-trifluoromethyl pyridin-2-yl)-piperazine-1-sulfonic acid amide. Physiologically compatible acid addition salts of compounds of Formula I are their conventional salts with inorganic acids, for example sulphuric acid, phosphoric acids or hydrohalic acids, preferably hydrochloric acid, or with organic acids, for example lower aliphatic monocarboxylic, dicarboxylic or tricarboxylic acids such as maleic acid, fumaric acid, lactic acid, tartaric acid, citric acid, or with sulphonic acids, for example lower al kanesulphonic acids such as methanesulphonic acid or trifluoromethanesulphonic acid, or benzenesulphonic acids optionally substituted in the benzene ring by halogen or lower alkyl, such as p-toluenesulphonic acid. Hydrochloric acid salts of the compounds of For mula I are preferred. In a further aspect, the invention also relates to compounds of general Formula la, 0 Ari--N N-S-NH. Ia 11 2 0 wherein Ar is phenyl, optionally substituted by one, two or three substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C 1 --alkyl, C 14 alkoxy, Co--alkoxyphenyl, C 14 -alkylthio, C 24 -alkanoyl, C 14 -alkyloxycarbonyl, C1- 5 alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or is phenyl substituted by phenyl or benzyl, each of which optionally being substituted in the phenyl ring by one or two substituents which may be the same or different and which may be selected from halogen, C, 4 -alkyl, CI-alkoxy and trifluoromethyl; or is naphthyl; pyridyl; 2-pyrimidinyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; qui nolinyl; isoquinolinyl; 1,2,3,4-tetrahydroisoquinolinyl; indolyll; isoindolinyl; thieno[3,2 d]pyrimidinyl or pyrazolo[1,5-a]pyrimidinyl each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, ni tro, pyrrolidinyl, C 14 -alkyl, C- 4 -alkoxy and C- 4 -alkyloxycarbonyl; and their physiologically compatible acid addition salts, for the use as medicament for mammals and humans; and/or to pharmaceutical compositions comprising a pharmaco logically effective quantity of a compound of Formula la or its physiologically compatible acid addition salts and conventional pharmaceutically acceptable auxiliaries and/or carri ers. According to one embodiment of the invention, there is provided a compound of Formula la, 0 Ari-N N-S-NH 2 Ia 0 wherein Arl is phenyl, optionally substituted by one, two or three substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, cyano, nitro, C 1 4 -alkyl, C 4 -alkoxy, CO alkoxyphenyl, C 4 -alkylthio, C 24 -alkanoyl, Cl-alkyloxycarbonyl,

C

4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 alkylen; or is phenyl substituted by phenyl or benzyl, each of which optionally being substituted in the phenyl ring by one or two substituents which may be the same or different and which may be selected from halogen, Cl-alky, C 14 -alkoxy and trifluoromethyl; or is naphthyl; pyridyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; 1,2,3,4-tetrahydroisoquinolinyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or 6 pyrazolo[1,5-a]pyrimidinyl each optionally being substituted by one or two substitu ents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C-4-alkyl, C 4 -alkoxy and C-alkyloxycarbonyl; and its physiologically compatible acid addition salts for the use as a medicament for mammals and humans. In still a further aspect, the present invention relates to novel N-sulfamoyl-N' arylpiperazines of general Formula lb, O Ar 2 -N N-S-NH Ib 0 wherein Ar 2 is phenyl substituted once by fluoro, 3-chloro, 4-chloro, bromo, iodo, hydroxy, C 14 alkyl, C 24 -alkoxy, CO 4 -alkoxyphenyl, C1.4-alkylthio, C 24 -alkanoyl, Cw- 4 -oxycarbonyl, hydroxycarbamoyl, carboxy, trifluoromethyl, cyano, nitro, two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen, and Cw.<alkylsulfonyl; or is phenyl substituted by two or three substituents which may be the same or differ ent and which may be selected from the group consisting of halogen, carboxy, hy droxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, Cw-4-alkyl, C1.

4 -alkoxy, C 1 -4 alkylthio, C 24 -alkanoyl, C 4 -oxycarbonyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or is phenyl substituted once by phenyl or benzyl, each of which optionally being sub stituted in the phenyl ring by one or two substituents which may be the same or dif ferent and which may be selected from halogen, trifluoromethyl, C 14 -alkyl and C4 alkoxy; or is naphthyl; pyridyl; 2-pyrimidinyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; qui nolinyl; isoquinolinyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5 a]pyrimidinyl each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C 4 -alkyl,

C

14 -alkoxy and C 4 -oxycarbonyl; or 6a is 1,2,3,4-tetrahydroisoquinolinyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, Cl4-alkyl, C 14 alkoxy and C 4 -oxycarbonyl; and their physiologically compatible acid addition salts. According to one embodiment of the invention, there is provided a compound of Formula lb, 0 Ar 2 -N N-S-NH 2 Ib wherein Ar2 is phenyl substituted once by 3-chloro, bromo, iodo, hydroxy, C 2 4 -alkoxy, Co4 alkoxyphenyl, C-4ralkylthio, C 2

.

4 -alkanoyl, C 4 -alkyloxycarbonyl, hydroxycarbamoyl, carboxy, cyano, nitro, two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 1

.

2 -alkylen, and C 1 4 -alkylsulfonyl; or is phenyl substituted by two or three substituents which may be the same or differ ent and which may be selected from the group consisting of carboxy, hydroxy, hy droxycarbamoyl, trifluoromethyl, cyano, nitro, C- 4 -alkyl, C 14 ralkoxy, C 14 -alkylthio,

C

24 -alkanoyl, C- 4 -alkyloxycarbonyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or is phenyl substituted once by phenyl or benzyl, each of which optionally being sub stituted in the phenyl ring by one or two substituents which may be the same or dif ferent and which may be selected from halogen, trifluoromethyl, C 14 -alkyl and C 14 alkoxy; or is naphthyl; pyridyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5-a]pyrimidinyl each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxy carbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C 14 -alkyl, C 14 -alkoxy and C 14 alkyloxycarbony; or is 1, 2 ,3,4-tetrahydroisoquinolinyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of 6b halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C1.4-alkyl, C 1

.

4 alkoxy and C, 4 -alkyloxycarbonyl; and its physiologically compatible acid addition salts. Some N-sulfamoyl-N'-arylpiperazines which are coming under the scope of general Formula I according to the present invention are already known, e.g. from patent applica tions DE-OS 1964441 (US 3,709,677), WO 94/07867 and/or WO 95/09151, and can be produced according to the processes described in these specifications or according to analogous processes. In general, compounds of Formula I (including compounds of Formulas la and Ib) can be produced in known manner by either a) reacting an arylpiperazine compound of general Formula 11, Ar-N NH II wherein Ar has the above meaning, with sulfamide, or b) reacting an arylpiperazine of Formula II with a 4-dimethylaminopyridin (= DMAP) reagent which is protected with the tert.-butyloxycarbonyl (= boc) group, of Formula 111, WO 2005/110413 PCT/EP2005/052281 7 H 3C CHa O 0C H CK C 1 - /a 3 O N-S-No N \+ III - CH 3 and subsequently cleaving off the boc group under acidic conditions from the obtained intermediate compound, or c) reacting an arylpiperazine of Formula II with sulfamoylchloride, which is prefera bly protected with the boc group, of Formula IV,

H

3 C

CH

3 0 H C _ 0 3 0 N-S-Cl IV 11 0 and subsequently cleaving off the boc group under acidic conditions from the obtained intermediate product, and if desired converting resulting free bases of Formula I into their physiologically com patible salts, or converting salts of the compounds of Formula I into the free bases of Formula 1. In process variant a), the reaction can be carried in an organic solvent which is inert under the reaction conditions, in particular in an aprotic solvent such as toluene or xy lene or in a mixture of such solvents. Suitable reaction temperatures are between room temperature and the boiling point of the solvent or solvent mixture, preferably between 600C and 1000C. In process variant b), the reaction can be carried out in an organic solvent which is inert under the reaction conditions, in particular a dipolar-aprotic solvent such as chloro form, dichloromethane or dioxane, or in a mixture of such solvents. Suitable reaction temperatures are between 10*C and 50 0 C, preferably at room temperature. The boc protecting group can subsequently be cleaved off in a known manner in acidic media, e.g. in an ethanolic solution of hydrochloric acid. In process variant c), the reaction can be carried out in an organic solvent which is inert under the reaction conditions, in particular a dipolar-aprotic solvent such as chloro form or dichloromethane or in a mixture of such solvents. Suitable reaction temperatures are between 10*C and 500C, preferably at room temperature. The boc protecting group can subsequently be cleaved off in a known manner in acidic media, e.g. in an ethanolic WO 2005/110413 PCT/EP2005/052281 8 solution of hydrochloric acid. Using a boc-protected sulfamoylchloride is preferred. How ever, under the appropriate reaction conditions known to those skilled in the art, also unprotected sulfamoylchloride in the presence of a base may be used. Compounds of Formula I are generally known compounds or such compounds can routinely be prepared by those skilled in the art according to known processes and from known starting materials. For example can compounds of Formula I1, wherein Ar is op tionally substituted biaryl, be prepared by reacting a compound of general Formula V, X-Ar 3 -N NH V wherein ArP has the meaning monocyclic or bicyclic Crjo-aryl, whose ring carbon atoms are optionally replaced one to three times by nitrogen, oxygen and/or sulphur, and/or whose C_ 1 0 -aryl ring system optionally contains three to five double bonds; and X is a cleavable leaving group like halogen, preferably bromine; with a compound of general Formula VI, OH Ar 4 -B VI OH wherein Ar4 has the meaning thienyl, naphthyl, pyridyl; phenyl or benzyl, each of which phenyl or benzyl being optionally substituted in the phenyl ring by one, two or three sub stituents which may be the same or different and which may be selected from halogen, trifluoromethyl, cyano, C 1

.

6 -alkyl, Cw_-alkoxy or C-alkylsulfonyl; in the presence of a palladium catalyst. The reaction can be carried out in a manner known as "Suzuki coupling reaction" in an organic solvent which is inert under the reaction conditions, in particular in a dipolar protic solvent such as a lower alkanol like methanol or ethanol, or an ether of a lower divalent alkanol like ethylene glycol dimethyl ether, or in mixtures of such solvents or in mixtures of such solvents with water. Suitable reaction temperatures are between 1000C and 2000C, preferably between 120*C and 1800C. The reaction can expediently be car ried out by using a microwave reactor. Usually, the reaction is carried out in the presence of a base like an alkalicarbonate, preferably potassium carbonate. Suitable palladium catalysts are salts of palladium-(I), like palladium-(II)-acetate.

WO 2005/110413 PCT/EP2005/052281 9 Compounds of Formulas III and IV are generally known compounds and/or can rou tinely be prepared by those skilled in the art according to known processes and from known starting materials. Compounds of Formula V and VI are generally known com pounds and/or such compounds can routinely be prepared by those skilled in the art ac cording to known processes and from known starting materials. In yet another aspect, the present invention also relates to a method of treating or preventing obesity, the metabolic syndrome and/or syndrome X and/or cardiovascular diseases, in mammals and humans comprising administering to a subject in need thereof a therapeutically effective amount of a compound of Formula I or its physiologically com patible acid addition salts. Obesity according to the present invention is meant to comprise any increase in body fat that results in increased bodyweight, comprising as a preferred alternative but not limited to the medical definition of obesity. The invention thus also relates to non medical weight loss, such as cosmetic weight loss and includes improving bodily appear ance in general. Further, the term obesity also is meant to comprise drug induced obesity and/or juvenile obesity. The concomitant diseases of obesity or the secondary diseases thereof which can each be treated with the compounds according to the invention include in particular the metabolic syndrome and/or syndrome X and cardiovascular diseases. The term "metabolic syndrome" as used in this application is meant to cover a com plex of clinical pictures which - besides central obesity - mainly comprises hypertension, in particular arterial hypertension; insulin resistance, in particular diabetes mellitus type 11; glucose intolerance; dyslipoproteinaemia, in particular as hypertriglyceridaemia, accom panied by dyslipoproteinaemia occurring with lowered HDL-cholesterol, and also hyperu ricaemia, which can lead to gout. According to information from the American Heart As sociation, the metabolic syndrome is closely linked to insulin resistance. Some people are genetically predisposed to insulin resistance. Acquired factors, such as excess body fat and physical inactivity, can elicit insulin resistance and the metabolic syndrome in these people. Most people with insulin resistance have central obesity. The biologic mechanisms at the molecular level between insulin resistance and metabolic risk factors are not fully understood and appear to be complex. One group of people at risk for de veloping metabolic syndrome are those with diabetes who have a defect in insulin action and cannot maintain a proper level of glucose in their blood. Another is people, mainly those with high blood pressure, who are nondiabetic and insulin-resistant but who com- WO 2005/110413 PCT/EP2005/052281 10 pensate by secreting large amounts of insulin. This condition is known as hyperinsuline mia. A third group is heart attack survivors who, unlike hypertensives, have hyperinsu linemia without having abnormal glucose levels. The metabolic syndrome has become increasingly common in higher developed countries like the United States, where it is estimated that about 20-25 percent of US adults have it. There are no well-accepted cri teria for diagnosing the metabolic syndrome. The criteria proposed by the Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel 111) are the most current and widely used. According to the ATP Ill criteria, the metabolic syndrome is identified by the presence of three or more of these components: e Central obesity as measured by waist circumference (Men - Greater than 40 inches; Women - Greater than 35 inches). " Fasting blood triglycerides greater than or equal to 150 mg/dL. * Blood HDL cholesterol (Men - Less than 40 mg/dL; Women - Less than 50 mg/dL) e Blood pressure greater than or equal to 130/85 mmHg. * Fasting glucose greater than or equal to 110 mg/dL. The term "syndrome X" is closely related to the term "metabolic syndrome" and usu ally is supposed to denominate the identical disease or condition. According to informa tion from the American Heart Association, the term "Syndrome X" refers, however, addi tionally to a heart condition where chest pain and electrocardiographic changes that sug gest ischemic heart disease are present, but where there are no angiographic findings of coronary disease. Patients with cardiac syndrome X also sometimes have lipid abnor malities. The term "cardiovascular diseases" in conjunction with obesity is usually under stood to mean coronary heart disease, which can lead to heart failure, cerebrovascular diseases, which may for example be accompanied by an increased risk of strokes, and peripheral occlusive arterial disease. Due to their inherent properties, the compounds of Formula I or their physiologically compatible acid addition salts are also expected to be useful in the treatment of diabetic conditions or diseases which are unrelated to obesity. Such diabetic conditions or dis- WO 2005/110413 PCT/EP2005/052281 11 eases comprise e.g. diabetes mellitus type 11, diabetic neuropathy, diabetic retinopathy, diabetic nephropathy, diabetic microangiopathy or diabetic macroangiopathy. Further concomitant and/or secondary diseases of obesity may be gall-bladder dis eases such as formation of gallstones, sleep apnoea syndrome, orthopaedic complica tions such as osteoarthritis and psychosocial disorders. The compounds of Formula I are further deemed to be useful as anticonvulsants for the prophylaxis or treatment of epilepsy in mammals and humans. The compounds of Formula I according to the invention are inhibitors of mammalian carbonic anhydrases, in particular of human carbonic anhydrase isozymes of subtypes Il and/or V (= hCA II and/ or hCA V). Pharmacological Test Methods The example numbers quoted in the pharmacological test methods relate to the preparation examples described below. 1. In vitro inhibition of human carbonic anhydrase isoenzyme II (hCA II) The test compounds of Formula I in 96 well microplates were diluted with aqua bidest by using an automatic pipettor (CyBiWell*). From the different dilution plates, ali quots of 20 pl were transferred to the 96 well black assay plates with a pipetting station (Tecan Genesis*). In a second step, 148 pl of potassium phosphate buffer (20 mM, pH 7.4) was added, and as a third step, 20 pl of enzyme solution (1 pM human carbonic anhydrase isoenzyme I from erythrocytes (Sigma-Aldrich), dissolved in potassium phos phate buffer) incubated for 60 min at room temperature and the fluorescence signal (Tecan Ultra* fluorescence reader; excitation wavelength: 280 nm; emission wavelength: 465 nm) read at the end of the preincubation period (FLU-1). After the preincubation time, 20 pl of aqueous dansylamide solution (1 mM dansylamide (Sigma-Aldrich), dis solved in hydrochloric acid) were added and the fluorescence signal read every 10 min for a period of 60 min at 37 0 C. For calculation, the fluorescence data of the time point 60 min (FLU-2) were used. The total volume of assay mixture amounted to 208 pl. The final concentration of carbonic anhydrase II was 10-7 M/L, of dansylamide 2.25x10 6 and of compounds from 10- M/L up to 105 M/L. Final concentration of DMSO as compound solvent was 0.1 mM. Each microplate also contained blanks without compound and en zyme, controls without compound and ethoxzolamide (final concentration 5x10 8 M/L). All WO 2005/110413 PCT/EP2005/052281 12 data reflect single measurements. Data were expressed as % inhibition after calculation by the formula: % inhibition = 100((l-(FLU-2,p-FLU-2biank-FLU-Iepd+FLU-Iblank)/(FLU- 2 conforFLU-2blank FLU-1 conotroFLU-1 blank)) The %inhibition data for each compound and the respective final concentrations were used for IC 5 o calculations by using the Prism 4 software. Concentration action fig ures were calculated by applying the Prism algorithm for nonlinear regression (curve-fit): sigmoidal dose response with variable slope and the constraints: top: 100 and bottom 0. In this test model, the test substances of Formula I listed. in Table I below showed the IC 50 values given below: Table 1: hCA II inhibiting effect of the test substances in vitro Example No. ICSO [pM] 2 5.1 3 7.8 4 3.7 7 1.8 8 1.7 9 7.3 10 4.0 11 0.5 12 1.2 13 0.9 14 0.2 15 0.4 16 0.3 17 1.9 18 1.6 19 0.08 20 0.3 21 0.2 2. In vivo oral glucose tolerance test in the rat The studies were carried out in individually housed male fatty Zucker rats (n= 10 per group) weighing ca. 250-500 g. The rats were kept on a normal 12/12h light/dark cycle (lights on 07.00) and they were allowed food (lab chow) and water ad libitum ex- WO 2005/110413 PCT/EP2005/052281 13 cept for during experiments, when they were fasted overnight before the glucose chal lenge. The test substances of Formula I were suspended in 2% polyethylenglycol (= PEG) 1% carboxymethylcellulose and administered by oral gavage at a dose of 100 mg/kg/day; 1/3 of the dose (1 ml/kg, 33 mg/ml) was administered at 08.30-09.30 h; the remaining 2/3 dose (2ml/kg; 33 mg/ml) was administered between 16.00-17.00 h and the last 1/3 dose was given the following morning. Control animals received only the vehicle. On the day of the test, 45 min after the final dose of test substance/vehicle a blood sam ple (0 min) was taken (tail vein) immediately after which the rats received an oral glucose challenge (1.25 g/kg; 118 mg/ml). Further blood samples were taken at 30, 60, 90, 120 min after the glucose challenge. The second drop of blood of each sample was placed on a glucose test strip before this was placed in the glucose meter for determination of blood glucose level (Life Scan One Touch Ultra Blood* Glucose Meter and Life Scan One Touch Ultra* Test Strips; Life Scan Inc.; Milpitas, CA 95035). The remaining blood of each sample was spun and the plasma was frozen at -80 0 C before analysis for insulin (1-2-3 Rat Insulin ELISA kit, Alpco Diagnostics). The values obtained were plotted and the AUC for test compounds and vehicle (for glucose and insulin) were determined after which the percent control AUC, percent con trol maximum value and % control baseline were estimated, to determine the influence of the test compound on the glucose tolerance. In the test model described above, the test substances showed the following results (given as percentage % of control): Table 2: Influence of test substances on glucose and insulin levels Ex. Glucose Insulin No. AUC Maximal Baseline AUC Maximal Base effect effect line 2 84 78 82 95 95 85 6 89 84 91 104 123 109 14 102 94 88 107 92 97 3. Acute in vivo food intake test in mice The studies were carried out in individually housed male C57B1/6 mice (n=8 per group). The mice were kept on an inverted 12112h light/dark cycle (lights on 22:00). They were allowed food (high caloric diet) and water ad libitum. Food intake and water consumption was measured daily. The test compound of Formula I was suspended in WO 2005/110413 PCT/EP2005/052281 14 1% methylcellulose in water and 2% (v/v) of Poloxamer 188 (Lutrol F68*) and adminis tered by oral gavage at a dose of 100 mg/kg/day. One half of the dose was administered at 7.00-9.00 h; the remaining half of the dose was administered between 15.00-15.30 h. In the test model described above, the test substances caused a decrease of the animals' 24h food intake to the percentages of food intake when compared to control as given in table 3 below. Table 3: Influence of test substances on food intake Example No. food intake 6[% of control] 2 68 7 78 12 53 15 79 21 76 4. Chronic influence on food and water intake and body weight gain in vivo Female Wistar rats (weight range 250-300 g; Charles River, Margate, Kent) were housed in pairs in polypropylene cages with solid floors and sawdust bedding at a tem perature of 21±4*C and 55±20% humidity Animals were maintained on a reverse phase light-dark cycle (lights off for 8 hours from 10.00-18.00 h) during which time the room was illuminated by red light. Animals had free access to powdered high fat diet (VRF1 plus 20% lard), ground chocolate, ground peanuts and tap water at all times. The three different diets were contained in separate glass feeding jars with aluminium lids (Solme dia Laboratory Suppliers, Romford, Essex). Each lid had a 3-4 cm hole cut in it to allow access to the food. Animals were housed in pairs for twelve weeks. At least two weeks before the start of the baseline readings, animals were housed individually in polypropyl ene cages with wire grid floors to enable the food intake of each rat to be recorded. Polypropylene trays with cage pads were placed beneath each cage to detect any food spillage. At the start of the study, animals were weighed (to the nearest 0.1 g using an elec tronic top-pan balance) and allocated into 6 weight-matched treatment groups, each con taining 10 animals. Following a 7 day baseline run-in period, during which time all ani mals were dosed orally once a day with vehicle (1% Tylose MH50, 0.1% poloxamer 188), rats were given vehicle or test compound of Formula I for 28 days as described in Table 4 below: WO 2005/110413 PCT/EP2005/052281 15 Table 4: Treatment scheme of rats with compound of Formula I, example 2 (= ex. 2) Group Treatment 1 (0 h) Treatment 2 (4 h) n A Vehicle po Vehicle po 1 0 B ex. 2, 30 mg/kg po ex. 2, 30 mg/kg po 1 C ex. 2, 50 mg/kg po ex. 2, 50 mg/kg po 1 1 0 The test substance of example 2 was suspended in 1% Tylose MH50, 0.1% polox amer 188 and administered by oral gavage (2 mI/kg). All dosing occurred at the onset of the 8 hours dark period (spanning the period immediately before and after lights out). The second treatments were given 4 hours after the first. Rats, feeding jars and water bottles were weighed (to the nearest 0.1 g) every day at the time of administration of vehicle or test substance. At each reading, the tray below each cage was examined for spilt food, which was returned to the appropriate jar before weighing. However, spillage of food from the feeding jars was negligible. Variations in body weight and energy levels of the different types of food were accounted for by expressing the food intake results in terms of kJ/kg rat weight. Water intake results were expressed in g/kg. Animals were killed at the end of the study (by CO 2 to minimise any fluid loss) on day 29 and blood samples (5 ml whole blood/animal) were collected by cardiac puncture. Plasma was separated by centrifugation and stored at -75 0 C until analysis. Following blood collection carcasses were weighed, frozen and stored at -75"C for body composi tion analysis. Body fat, protein, water and ash levels of the carcasses were determined using standard chemical analysis techniques. Only fat, protein, water and ash content were measured as other components (mainly carbohydrate) form less than 2% of total body composition. Carcasses were individually milled at the temperature of liquid nitrogen, mixed and two representative samples taken. Carcass water was determined by freeze-drying the samples to constant weight. Carcass fat was determined on the freeze-dried samples using a modified Soxhlet extraction protocol (petroleum ether at 40-60 0 C) with a Foss Soxtec HT2 system (Foss UK Ltd, Wheldrake, UK) according to the manufacturers rec ommended protocol. Carcass protein was determined using a micro-Kjeldahl procedure on the freeze-dried samples using a Foss 2012* digestion block and Foss 2200* distilling unit (Foss UK Ltd). Residual carcass ash was determined by firing the freeze-dried sam ples at high temperatures using a muffle ashing furnace. Repeat determinations of the WO 2005/110413 PCT/EP2005/052281 16 chemical analysis parameters were performed as necessary (e.g. if the duplicate sam pies differed by more than 1%). Table 5: Effect of the test compound of example 2 on water, fat, protein and ash con tent of carcasses: mean weight per rat Group Water (g) Fat (g) Protein (g) Ash (g) Carcass (g) Vehicle 210.9 ± 2.7 144.5 ± 11.6 67.5 ± 1.2 12.52 ± 0.45 438.4 ± 12.1 ex. 2 (30 205.8 ± 3.1 87.9 ± 3.8** 64.8 ± 1.2 12.13 ± 0.48 375.4 ± 4.8 ** mg/kg) III ex. 2 (50 202.2 ± 3.6 83.6 ± 6.9** 62.8 ± 1.3 11.38 ± 0.29* 365.6 ± 3.8** mg/kg) I n I Results are expressed as treatment group means (all n = 9-10 and adjusted for differ ences between the groups in body weight at baseline) and standard error of the mean (=SEM; calculated from the residuals of the statistical model). Statistical comparisons were by ANCOVA (baseline body weight as covariate) followed by Williams' test. Significant differences are denoted by **p<0.001, *op<0.01, *p<0.05 vs vehicle, Table 6: Effect of the test compound of example 2 on water, fat, protein and ash con tent of carcasses: mean percent final body weight Group "Water (%) Fat (%) Protein (%) Ash (%) Total (%) Vehicle 48.8± 1.0 31.9 ±1.4 15.7 ± 0.4 2.91 ± 0.12 99.3 ex. 2 (30 55.2 ± 0.8** 22.8 ± 1.0** 17.4 ± 0.3*0 3.24 ± 0.12 98.6 mg/kg) ex. 2 (50 55.7 ± 1.2** 22.3 ± 1.8** 17.3 ± 0.4*0 3.14 ± 0.1 98.4 mg/kg) I I I I I Results and statistics are expressed as above. Table 7: Effect of test compound of example 2 on plasma parameters in dietary obese female wistar rats Group Glucose (mM) Insulin (ng/ml) Leptin (ng/ml) Vehicle 8.2 ±0.7 2.33 ± 0.53 144.6 ± 22.7 ex. 2 (30 mg/kg) 8.6 ± 0.5 1.53 ±0.33 68.8 ± 9.4** ex. 2 (50 mg/kg) 7.9 ± 0.5 1.40 ± 0.41 58.8 ± 11.6** Results and statistics are expressed as above. The present invention further provides a pharmaceutical composition or medica ment comprising a pharmacologically effective quantity of a compound of Formula I or its WO 2005/110413 PCT/EP2005/052281 17 physiologically compatible acid addition salts and preferably further comprising conven tional pharmaceutically acceptable auxiliaries and/or carriers. Suitable pharmaceutically acceptable auxiliaries and/or carriers are well known in the art and include pharmaceutical grade starch, mannitol, lactose, magnesium stearate, sodium saccharin, talcum, cellulose, glucose, sucrose (or other sugar), magnesium car bonate, gelatin, oil, alcohol, detergents, emulsifiers or water (preferably sterile). The com position may be a mixed preparation of a composition or may be a combined preparation for simultaneous, separate or sequential use (including administration). The compounds according to the invention or their physiologically compatible acid addition salts for use in the aforementioned indications may be administered by any convenient method, for ex ample by oral (including by inhalation), parenteral, mucosal (e.g. buccal, sublingual, na sal), rectal or transdermal administration and the compositions adapted accordingly. For oral administration, the compounds can be formulated as liquids or solids, for example solutions, syrups, suspensions or emulsions, tablets, capsules and lozenges. A liquid formulation will generally consist of a suspension or solution of the compound or physio logically acceptable salt in a suitable aqueous or non-aqueous liquid carrier(s) for exam ple water, ethanol, glycerine, polyethylene glycol or an oil. The formulation may also contain a suspending agent, preservative, flavouring or colouring agent. A composition in the form of a tablet can be prepared using any suitable pharmaceutical carrier(s) routinely used for preparing solid formulations. Examples of such carriers include magnesium stearate, starch, lactose, sucrose and microcrystalline cellulose. A composition in the form of a capsule can be prepared using routine encapsu lation procedures. For example, powders, granules or pellets containing the active ingre dient can be prepared using standard carriers and then filled into a hard gelatin capsule; alternatively, a dispersion or suspension can be prepared using any suitable pharmaceu tical carrier(s), for example aqueous gums, celluloses, silicates or oils and the dispersion or suspension then filled into a soft gelatin capsule. Compositions for oral administration may be designed to protect the active ingredient against degradation as it passes through the alimentary tract, for example by an outer coating of the formulation on a tab let or capsule. Typical parenteral compositions consist of a solution or suspension of the compound or physiologically compatible acid addition salts in a sterile aqueous or non aqueous carrier or parenterally acceptable oil, for example polyethylene glycol, polyvinyl pyrrolidone, lecithin, arachis oil or sesame oil. Alternatively, the solution can be lyophi lised and then reconstituted with a suitable solvent just prior to administration. Composi- WO 2005/110413 PCT/EP2005/052281 18 tions for nasal or oral administration may conveniently be formulated as aerosols, drops, gels and powders. Aerosol formulations typically comprise a solution or fine suspension of the active substance in a physiologically acceptable aqueous or non-aqueous solvent and are usu ally presented in single or multidose quantities in sterile form in a sealed container, which can take the form of a cartridge or refill for use with an atomising device. Alternatively the sealed container may be a unitary dispensing device such as a single dose nasal inhaler or an aerosol dispenser fitted with a metering valve which is intended for disposal once the contents of the container have been exhausted. Where the dosage form comprises an aerosol dispenser, it will contain a pharmaceutically acceptable propellant. The aero sol dosage forms can also take the form of a pump-atomiser. Compositions suitable for buccal or sublingual administration include tablets, lozenges and pastilles, wherein the active ingredient is formulated with a carrier such as sugar and acacia, tragacanth, or gelatin and glycerin. Compositions for rectal or vaginal administration are conveniently in the form of suppositories (containing a conventional suppository base such as cocoa butter), pessaries, vaginal tabs, foams or enemas. Compositions suitable for transdermal administration include ointments, gels, patches and injections including powder injec tions. Conveniently the composition is in unit dose form such as a tablet, capsule or am poule. The pharmaceutical compositions according to the invention are useful in the pre vention and/or treatment of obesity, concomitant and/or secondary diseases of obesity; other medical weight loss and non-medical related weight loss; and/or diabetic conditions or diseases. The compounds of the present invention and their physiologically compatible acid addition salts are generally administered as pharmaceutical compositions which are im portant and novel embodiments of the invention because of the presence of the com pounds disclosed herein. In embodiments of the invention, a pharmaceutical pack or kit is provided comprising one or more container(s) filled with one or more of the ingredients of a pharmaceutical composition of the invention. Associated with such container(s) can be various written materials such as instructions for use, or a notice in the form pre scribed by a governmental agency regulating the manufacture, use or sale of pharma ceuticals products, which notice reflects approval by the agency of manufacture, use, or sale for human or veterinary administration. Yet a further aspect of the invention provides a process for the manufacture of a pharmaceutical composition as described hereabove. The manufacture can be carried out by standard techniques well known in the art and involves combining a compound WO 2005/110413 PCT/EP2005/052281 19 according to the invention and the pharmaceutically acceptable auxiliaries and/or carri ers. The composition may be in any form including a tablet, a liquid, a capsule, and a powder or in the form of a food product, e.g. a functional food. In the latter case the food product itself may act as the pharmaceutically acceptable carrier. The compound or composition is preferably administered to a patient in need there of and in a quantity sufficient to prevent and/or treat the symptoms of the condition, dis order or disease For all aspects of the invention, particularly medical ones, the admini stration of a compound or composition has a dosage regime which will ultimately be de termined by the attending physician and will take into consideration such factors such as the compound being used, animal type, age, weight, severity of symptoms, method of administration, adverse reactions and/or other contraindications. Specific defined dosage ranges can be determined by standard design clinical trials with patient progress and recovery being fully monitored. Such trials may use an escalating dose design using a low percentage of the maximum tolerated dose in animals as the starting dose in man. The physiologically acceptable compounds of the invention will normally be administered in a daily dosage regimen (for an adult patient) of, for example, an oral dose of between I mg and 2000 mg, preferably between 30 mg and 1000 mg, e.g. between 10 and 250 mg or an intravenous, subcutaneous, or intramuscular dose of between 0.1 mg and 100 mg, preferably between 0.1 mg and 50 mg, e.g. between 1 and 25 mg of the compound of the Formula I or a physiologically acceptable salt thereof calculated as the free base, the compound being administered 1 to 4 times per day. The compound used according to the invention can also be administered to children or juveniles while the individual dosage regimens in these cases will need to be particularly thoroughly adjusted by the physician and will usually comprise lower doses than will be administered to adults. Suitably the compounds will be administered for a period of continuous therapy, for example for at least a week, but usually for a longer period of several weeks to several months. The invention also provides a cosmetic method (non-therapeutic) for maintaining a given weight, or for cosmetic weight loss, the method comprising the administration of a compound according to the other aspects of the invention, preferably in combination with a pharmaceutically acceptable carrier or diluent. The compound or composition is preferably administered to a subject in need or in desideratum thereof and in a quantity sufficient to maintain a given weight or for cos metic weight loss.

WO 2005/110413 PCT/EP2005/052281 20 In still a further aspect, the compounds of Formula I and their physiologically com patible acid addition salts may favourably be administered in combination with one or more active agents (as a pharmaceutical combination composition) selected from antidia betics; antiobesity or appetite-regulating agents; cardiovascular active agents, in particu lar antihypertensives; diuretics; active agents altering lipid levels, in particular lipid lowering agents; and active ingredients for the treatment and/or prevention of complica tions caused by diabetes or associated with diabetes. Suitable antidiabetics comprise e.g. insulins, amylin, derivatives of GLP-1 and GLP 2 such as, for example, those disclosed in WO 98/08871 and orally active hypoglycemic active ingredients. The orally active hypoglycemic active ingredients preferably comprise sulfonylureas, e.g tolbutamide, glibenclamide, glimepiride, glipizide, gliquidone, gli soxepide, glibomuride or gliclazide; biguanides, e.g. metformin; meglitinides, e.g. repag linide; beta3 adrenergic agonists; oxadiazolidinediones; glucosidase inhibitors e.g. alpha glucosidase inhibitors such as miglitol or acarbose; glucagon receptor antagonists, GLP I agonists, potassium channel openers like diazoxide or those disclosed in WO 97/26265 or WO 99/03861; CB-1 (cannabinoid-1 receptor) antagonists/inverse agonists; insulin sensitizers like thiazolidinediones, e.g. troglitazone, ciglitazone, pioglitazone, rosiglitazone or the compounds disclosed in WO 97/41097, in particular 5-[[4-[(3,4 dihydro-3-methyl-4-oxo-2-quinazolinylmethoxy]pheny-I]methyl]-2,4-thiazolidinedione; ac tivators of insulin receptor kinase; inhibitors of liver enzymes involved in the stimulation of gluconeogenesis and/or glycogenolysis, for example inhibitors of glycogen phosphory lase; and modulators of glucose uptake and glucose excretion. Suitable antiobesity or appetite-regulating agents comprise one or more of a 5-HT (serotonin) transporter inhibitor, a NE (norepinephrine) transporter inhibitor, a CB-1 (can nabinoid-1 receptor) antagonist/inverse agonist, a ghrelin antibody, a ghrelin antagonist, a H3 (histamine H3) antagonist/inverse agonist, a MCHIR (melanin concentrating hor mone 1 R) antagonist, a MCH2R (melanin concentrating hormone 2R) agonist/antagonist, a NPY1 (neuropeptide Y YI) antagonist, a NPY2 (neuropeptide Y Y2) agonist, a NPY5 (neuropeptide Y Y5) antagonist, leptin, a leptin derivative, an opioid antagonist, an orexin antagonist, a BRS3 (bombesin receptor subtype 3) agonist, a CCK-A (cholecystokinin-A) agonist, a CNTF (ciliary neurotrophic factor), a CNTF derivative, a GHS (growth hormone secretagogue receptor) agonist, SHT2c (serotonin receptor 2c) agonist, a Mc3r (melano cortin 3 receptor) agonist, a Mc4r (melanocortin 4 receptor) agonist, a monoamine reup take inhibitor, a serotonin reuptake inhibitor, a GLP-1 (glucagon-like peptide 1) agonist, topiramate, phytopharm compound 57, an ACC2 (acetyl-CoA carboxylase-2) inhibitor, a WO 2005/110413 PCT/EP2005/052281 21 beta3 adrenergic agonist, a DGATI (diacylglycerol acyltransferase 1) inhibitor, a DGAT2 (diacylglycerol acyltransferase 2) inhibitor, a FAS (fatty acid synthase) inhibitor, a PDE (phosphodiesterase) inhibitor, a thyroid hormone B agonist, an UCP-1 (uncoupling pro tein 1), 2, or 3 activator, an acyl-estrogen, a glucocorticoid antagonist, an 11 HSD-1 (11 beta hydroxy steroid dehydrogenase type 1) inhibitor, a SCD-1 (stearoyl-CoA desatu rase-1) inhibitor, a dipeptidyl peptidase IV (DP-IV) inhibitor, a lipase inhibitor, a fatty acid transporter inhibitor, a dicarboxylate transporter inhibitor, a glucose transporter inhibitor, a phosphate transporter inhibitor, and pharmaceutically acceptable salts and esters thereof. Suitable appetite-regulating agents (appetite suppressants) comprise sibutramine or the mono- and bisdemethylated active metabolites of sibutramine; fenfluramine or dexfenfluramine; mazindol, diethylpropion or phentermine; leptin or modified leptin; dex amphetamine and amphetamine. Suitable lipase inhibitors comprise orlistat, panclicins, lipase inhibitors isolated from micro organisms such as lipstatin (from Streptomyces toxytricini), ebelactone B (from Streptomyces aburaviensis), synthetic derivatives of these compounds; 2-oxy-4H-3,1 benzoxazin-4-one derivatives like Alizyme's ATL-962 or structurally related compounds; 2-amino-4H-3,1-benzoxazin-4-one derivatives or extracts of plants known to possess lipase inhibitory activity, e.g. extracts of Alpinia officinarum or compounds isolated from such extracts like 3-methylethergalangin (from A. officinarum); Suitable CB 1 -cannabinoid antagonists include rimonabant, SLV319, SR147778 and CP-945598. Suitable cardiovascular active agents comprise angiotensin Il receptor antagonists, e.g. abitesartan, benzyllosartan, candesartan, elisartan, embusartan, enoltasosartan, eprosartan, fonsartan, forasartan, glycyllosartan, irbesartan, isoteoline, losartan, mil fasartan, olmesartan, opomisartan, pratosartan, ripisartan, saprisartan, saralasin, sarme sin, tasosartan, telmisartan, valsartan, zolasartan; Kissei KRH-94, Lusofarmaco LR B/057, Lusofarmaco LR-B/081, Lusofarmaco LR B/087, Searle SC-52458, Sankyo CS 866, Takeda TAK-536, Uriach UR-7247, A-81282, A-81988, BIBR-363, BIBS39, BIBS 222, BMS-180560, BMS-184698, CGP-38560A, CGP-48369, CGP-49870, CGP-63170, CI-996, CV-1 1194, DA-2079, DE-3489, DMP-81 1, DuP-1 67, DuP-532, GA-0056, E-4177, EMD-66397, EMD-73495, EXP-063, EXP-929, EXP-3174, EXP-6155, EXP-6803, EXP 7711, EXP-9270, FK-739, HN-65021, HR-720, ICI-D6888, ICI-D7155, ICI-D8731, KRI 1177, KT3-671, KW-3433, L-158809, L-158978, L-159282, L-159689, L-159874, L- WO 2005/110413 PCT/EP2005/052281 22 161177, L-162154, L-162234, L-162441, L-163007, L-163017, LY-235656, LY-285434, LY-301875, LY-302289, LY-315995, ME-3221, PD-123177, PD-123319, PD-150304, RG-13647, RWJ-38970, RWJ-46458, S-8307, S-8308, SL-91.0102, U-96849, U-97018, UP-269-6, UP-275-22, WAY-126227, WK-1492.2K, WK-1360, X-6803, XH-148, XR-510, YM-358, YM-31472, ZD-6888, ZD-7155 and ZD-8731 or any physiologically compatible salts, solvates, prodrugs or esters thereof; daglutril; non-selective alpha-adrenoceptor antagonists, e.g. tolazoline or phenoxybenzamine; selective alpha-adrenoceptor antago nists, e.g. doxazosin, prazosin, terazosin or urapidil; beta-adrenoceptor antagonists, e.g. acebutolol, alprenolol, atenolol, betaxolol, bisoprolol, bupranolol, carazolol, carteolol, celiprolol, mepindolol, metipranolol, metoprolol, nadolol, oxprenolol, penbutolol, pindolol, propranolol, sotalol and timolol; mixed antagonists of alpha- and beta-adrenoceptors, e.g. carvedilol or labetolol; ganglion blockers, e.g. reserpine or guanethidine; alpha2 adrenoceptor agonists (including centrally acting alpha2-adrenoceptor agonists), e.g. clonidine, guanfacine, guanabenz methyldopa and moxonidine; renin-inhbitors, e.g. al skiren; ACE-inhbitors, e.g. benazepril, captopril, cilazapril, enalapril, fosinopril, imidapril, lisinopril, moexipril, quinapril, perindopril, ramipril, spirapril or trandolapril; mixed or selec tive endothelin receptor antagonists e.g. atrasentan, bosentan, clazosentan, darusentan, sitaxsentan, tezosentan, BMS-193884 or J-104132; direct vasodilators, e.g. diazoxide, dihydralazine, hydralazine or minoxidil; mixed ACE/NEP-inhbitors, e.g. omapatrilat; ECE inhbitors, e.g. FR-901533; PD-069185; CGS-26303; CGS-34043; CGS-35066; CGS 30084; CGS-35066; SM-19712; Ro0677447; selective NEP-inhibitors; vasopressin an tagonists, aldosterone receptor antagonists, e.g. eplerenone or spironolactone; angio tensin vaccine; and urotensin 11 receptor antagonists. Suitable diuretics comprise thiazide diuretics, e.g. althiazide, bemetizide, bendro flumethiazide, benzylhydrochlorothiazide, benzthiazide, buthiazide, chlorothiazide, cyclothiazide, hydrochlorothiazide, hydroflumethiazide, methyclothiazide, paraflutizide, polythiazide, teclothiazide, trichlormethiazide; thiazide analogue diuretics, e.g. chloraminofenamide, chlortalidone, clofenamide, clopamide, clorexolone, fenquizone, indapamide, mefruside, metolazone, quinethazone, tripamide, xipamide; loop diuretics, e.g. azosemide, bumetanide, furosemide, piretanide, torsemide; potassium sparing diuretics, e.g. amiloride, potassium canrenoate, spironolactone, triamterene or any physiologically compatible tautomers, salts, solvates, prodrugs or esters of any afore mentioned diuretic. Suitable active agents which alter lipid levels comprise compounds which alter lipid metabolism, such as antihyperlipidemic active ingredients and antilipidemic active ingre dients like HMGCoA reductase inhibitors, e.g. atorvastatin, berivastatin, cerivastatin, cril- WO 2005/110413 PCT/EP2005/052281 23 vastatin, fluvastatin, glenvastatin, lovastatin, mevastatin, pitavastatin, pravastatin, rosu vastatin, simvastatin or any physiologically compatible salts, solvates, prodrugs or esters thereof; inhibitors of cholesterol transport/of cholesterol uptake; inhibitors of bile acid reabsorption or inhibitors of the microsomal triglyceride transfer protein (MTP); com pounds which reduce food intake, PPAR (= peroxisome proliferator-activated receptors) and RXR agonists and active agents which act on the ATP-dependent potassium chan nel of the beta cells; fibric acids, e.g. bezafibrate, ciprofibrate, clofibrate, fenofibrate or gemfibrozil; cholestyramine, colestipol, probucol, ezetimibe and dextrothyroxine; HMGCoA synthase inhibitor, a cholesterol absorption inhibitor, an acyl coenzyme A cholesterol acyl transferase (ACAT) inhibitor, a cholesteryl ester transfer protein (CETP) inhibitor, a squalene synthetase inhibitor, an anti-oxidant, a PPAR a agonist, a FXR re ceptor modulator, a LXR receptor agonist, a lipoprotein synthesis inhibitor, a renin angio tensin system inhibitor, a microsomal triglyceride transport inhibitor, a bile acid reabsorp tion inhibitor, a PEAR8 agonist, a triglyceride synthesis inhibitor, a transcription modula tor, a squalene epoxidase inhibitor, a low density lipoprotein receptor inducer, a platelet aggregation inhibitor, a 5-LO or FLAP inhibitor, a PPAR 8 partial agonist, and niacin or a niacin receptor agonist, and pharmaceutically acceptable salts and esters thereof. Further active agents which may be suitable for use in combination with.the com pound of Formula I according to the present invention may be selected from the group consisting of CART agonists, H3 antagonists, TNF agonists, CRF agonists, CRF BP an tagonists, urocortin agonists, beta3-agonists, MSH (melanocyte-stimulating hormone) agonists, serotonin-reuptake inhibitors, mixed serotonin- and noradrenaline-reuptake inhibitors, 5HT modulators, MAO inhibitors, galanin antagonists, growth hormone, growth hormone-releasing compounds, TRH agonists, modulators of uncoupling proteins 2 or 3, leptin agonists, dopamine agonists (bromocriptine, doprexin), RXR modulators, hCNTF agonists and TR-beta-agonists. Preferred pharmaceutical combination compositions according to the invention comprise combinations of at least one compound of Formula I and at least one bigua nide; at least one compound of Formula I and at least one fibric acid; at least one com pound of Formula I and at least one HMGCoA reductase inhibitor; and at least one com pound of Formula I and at least one insulin sensitizer. Preferred compounds of Formula I for combination with one or more of the above mentioned active agents are 4-phenyl-piperazine-1-sulfonic acid amide; 4-(2-chloro phenyl)-piperazine-1-sulfonic acid amide; 4-(2-methoxy-phenyl)-piperazine-1-sulfonic acid amide; 4-pyridin-4-yl-piperazine-1-sulfonic acid amide; 4-pyrimidin-2-yl-piperazine-1- WO 2005/110413 PCT/EP2005/052281 24 sulfonic acid amide; 4-(4-fluoro-phenyl)-piperazine-1-sulfonic acid amide; 4-(4-chloro-3 trifluoromethyl-phenyl)-piperazine-1-sulfonic acid amide and/or 4-(3-chloro-5-trifluoro methyl-pyridin-2-yI)-piperazine-1-sulfonic acid amide. Metformine is the preferred biguanide for combination with at least one compound of Formula I. Preferred fibric acids for combination with at least one compound of Formula I are bezafibrate, ciprofibrate, clofibrate, fenofibrate and/or gemfibrozil. Fenofibrate is most preferred. Preferred HMGCoA reductase inhibitors for combination with at least one com pound of Formula I are atorvastatin, berivastatin, cerivastatin, crilvastatin, fluvastatin, glenvastatin, lovastatin, mevastatin, pitavastatin, pravastatin, rosuvastatin and/or simvas tatin or any physiologically compatible salts, solvates, prodrugs or esters thereof. Most preferred are simvastatin, lovastatin and/or pravastatin. Preferred insulin sensitizers for combination with at least one compound of Formula I are thiazolidinediones, in particular troglitazone, ciglitazone, pioglitazone and/or rosigli tazone. Rosiglitazone and pioglitazone are most preferred. More preferred combinations according to the invention are the combinations of 4 phenyl-piperazine-1-sulfonic acid amide with metformine; 4-phenyl-piperazine-1-sulfonic acid amide with fenofibrate; 4-phenyl-piperazine-1-sulfonic acid amide with simvastatin and 4-phenyl-piperazine-1-sulfonic acid amide with rosiglitazone. In one embodiment of the pharmaceutical combination compositions as described above and according to the invention, the compounds of Formula I can be obtained and administered together with the different active agents, e.g. in one combined unit dosage form like in one tablet or capsule, i.e. in a physical combination. In such a combined unit dosage form, the compound of Formula I and the different active agents can be segre gated from each other, e.g. by means of different layers in said tablet, e.g. by the use of inert intermediate layers known in the art; or by means of different compartments in said capsule. The corresponding active agents or their pharmaceutically acceptable salts may also be used in form of their hydrates or include other solvents used for crystallization. A unit dosage form may be a fixed combination. A unit dosage form, in particular a fixed combination of the compound of Formula I and one or more of the different active agents is a preferred alternative of this embodiment.

WO 2005/110413 PCT/EP2005/052281 25 In another embodiment the compounds of Formula I and the different active agents can be obtained and administered in two or more separate unit dosage forms, e.g. in two or more tablets or capsules, the tablets or capsules being physically segregated from each other. The two or more separate unit dosage forms can be administered simultane ously or stepwise (separately), e.g. sequentially one after the other in either order. Thus, the compounds of Formula I and the different active agents can be administered in either order at the same time or at different times spread over the day, the optimal dosage regimen usually being determined by prescription of a physician. The following examples are intended to explain the invention further, without limit ing its scope. Example 1: N-Sulfamoyl-N'-phenylpiperazine (= 4-Pheny-piperazine-1-sulfonic acid amide) A mixture of 25.0 g phenyl-piperazine in 77.0 ml of toluene and 17.8 g sulfamide was allowed to reflux for 8 hours. The mixture was left at room temperature over the week end. The resulting solids were suspended in 200 ml of methanol and maintained at 90 *C for 60 minutes. The suspension was concentrated (-140 ml methanol) by evaporation under reduced pressure, cooled and filtrated, washed with diethylether and finally dried. The crude product was recovered and recrystallized from 200 ml methanol (procedure above without concentration). Example 2: N-Sulfamoyl-N'-phenylpiperazine hydrochloride 0 N N-S-NH 2 x HCI 0 The crystalline fraction as obtained in example I above was treated with ethanolic hy drochloric acid, evaporated and finally dissolved in 100 ml methanol at 65 0 C. 150 ml of isopropylalcohol were added to this receiving solution and the methanol was removed under reduced pressure. Crystallisation overnight, filtration, washing with diethylether and drying under reduced pressure (oil pump) yielded 29.1 g of the title compound, mp. = 184 *C. Table 8: Elementar analysis of the compound of example 2 (MW 277.77): WO 2005/110413 PCT/EP2005/052281 26 calculated found C% 43.24 43.32 H % 5.81 5.86 N% 15.13 15.31 C % 12.76 12.77 Example 3: 4-(2-Methoxy-phenyl)-piperazine-1-sulfonic acid amide hydrochloride 0 0 N \ N-S-NH 2 xHCI 0 A) 12 ml of chlorosulfonyl isocyanate was added dropwise to an ice-cold solution of 13 ml tert.-butylalcohol in 100 ml dichloromethane. After 30 minutes, 4-dimethyl aminopyridine (34.5 g) was added. The resulting mixture was stirred for 1 hour at room temperature and diluted with dichloromethane until a clear solution resulted. This was washed several times with water, the organic layer separated, dried over Na 2

SO

4 , filtrated and largely evaporated. The residue was recrystallized from ace tonitrile to yield 30.4 g of the BOC-protected DMAP-reagent, mp. 156 0 C. B) 2-Methoxy-phenyl-piperazine (152 mg) was dissolved in 10 ml of dichloromethane. To this receiving solution, the BOC-protected DMAP-reagent as obtained above (238 mg) was added and the resulting mixture left overnight at room temperature. The mixture was then evaporated and the residue purified by flash-chromatography (stationary phase: silica gel; mobile phase: tetrahydrofurane + 5% methanol) to yield 192 mg of the boc-protected intermediate. C) 100 ml of absolute ethanol were cooled to 0*C in an ice-bath before 20 ml of ace tylchloride were added dropwise and the resulting mixture was stirred for 20 minutes. From the so prepared ethanolic hydrochloric acid solution, 5 ml were separated, the boc-protected compound as obtained above (192 mg) dissolved therein and stirred at room temperature for 3 hours. The mixture was then evaporated several times with ethanol, finally until dryness, to yield 225 mg of the title compound, mp. 191*C.

WO 2005/110413 PCT/EP2005/052281 27 Example 4: 4-Pyridin-2-yI-piperazine-1-sulfonic acid amide 0 N N-S-NH x HCI N0 A) Tert.-butyl alcohol (6.5 ml) were dissolved in 30 ml dichloromethane. The resulting solution was added dropwise to an ice-cooled solution of chlorosulfonyl isocyanate (6.0 ml) in 40 ml dichloromethane. After 30 min reaction time, the resulting mixture was diluted with dichloromethane up to 100 ml to get a 0.854 molar stock solution which was used for the next step without further purification. B) A freshly prepared stock solution of tert.-butylsulfamoylchloride (1.67 ml; 0.854 mo lar in dichloromethane, for preparation see above) was added to a solution of 2 pyridyl-piperazine (232 mg) in 4 ml dichloromethane and the resulting mixture was stirred at room temperature for 24 hours. 3 ml of an ethanolic HCI solution (for preparation see ex. 3C, above) were then added, before the resulting mixture was left over night at room temperature. After evaporation of the solvents under re duced pressure, a crudesolid was isolated. Subsequent flash chromatography of this solid (stationary phase: silicagel; mobile phase: tetrahydrofurane / methanol / ammonia 70 : 30 : 1 v/v/v) and drying of the product fractions yielded 200 mg of the title compound; liquid chromatography mass spectroscopy (= LC-MS): M+H 243 (99 % ELSD). Example 5: 4-(4'-Fluoro-biphenyl-4-y)-piperazine-1 -sulfonic acid amide 0 F N N-S-NH x HCI 0 A) 1-(4-Bromophenyl)-piperazine (250 mg), 4-fluorobenzeneboronic acid (254 mg), potassium carbonate (372 mg, dried and grinded) and palladium-(lI)-acetate (23.3 mg) were dissolved in 20 ml of a mixture of ethylene glycol dimethyl ether / water / ethanol (7 : 3 : 2 v/v/v) and put into a microwave reactor (Emrys Optimizer*). After 5 WO 2005/110413 PCT/EP2005/052281 28 min. reaction time at 1500C, methyl tert.-butyl ether was added to the now clear so lution, the organic phase was washed consecutively with water and brine and dried over Na 2

SO

4 . The organic phase was largely evaporated under reduced pressure. Another equal batch was produced and the crude products of both batches were together dissolved in dichloromethane. The organic phase was washed with diluted soda solution, dried over Na 2

SO

4 , the solvent largely evaporated under reduced pressure and the residue purified by flash chromatography (stationary phase: silica gel, mobile phase: dichloromethane / methanol 9 : 1 v/v) to yield 0.6 g of 1-(4' fluoro-biphenyl-4-yl)-piperazine. 'H-NMR (500MHz), 8 [ppm]: 7,62 d (1 H), 7,61 d (1 H), 7,22 t (2 H), 7,49 d (2H), 6,98 d (2H), 3,17 m (4H), 3,09 m (4H). B) 1-(4'-Fluoro-biphenyl-4-yl)-piperazine (0.6 g) as obtained above, and sulfamide (0.3 g) were dissolved in 30 ml of dioxane and then heated under reflux cooling for 3 hours. After cooling to room temperature, the solvent was largely removed under reduced pressure. The resulting solid was crystallized from methyl tert.-butyl ether to yield 0.4 g of the title compound, m.p. 243.5 - 245.2*C. The compounds of Formula I listed in Table 9 below can also be prepared accord ing to the processes described in the examples above or according to processes analo gous thereto: Table 9: Further compounds of Formula I Ex. No. Ar Salt m.p. 6 4-pyridinyl HCI 2430C 7 2-pyrimidinyl 8 2,3-dimethylphenyl HCI 202"C 9 4-fluorophenyl HCI 1250C 10 3-chlorophenyl 11 2-methyl-5-chlorophenyl HCI 190*C 12 3-trifluoromethyl-4-chloropheny HCI 180*C 13 3-cyano-2-pyridinyl HCI 1900C 14 3-chloro-5-trifluoro-2-pyridinyl HCI 1590C WO 2005/110413 PCT/EP2005/052281 29 Ex. No. Ar Salt M.P. 15 4-acetylphenyl HCI 156 0 C 16 3,5-dichloro-4-pyridinyl HCI 206 0 C 17 2-trifluoromethyl-4-quinolyl HOI 191 OC 18 4-trifluoro-2-pyrimidinyl HOI 156 0 C 19 5-trifluoro-2-pyridinyl HCI 1 69 0 C 20 2-nitro-4-trifluorophenyl HOI 1 34 0 C 21 2-fluoro-4-methylsulfonylphenyl HCI 184 0 C 22 benzo[1 ,3jdioxol-5-ylmethy HCI 233 0 C 23 1-naphthalenyl HCI 193 0 C 24 4-ethoxyphenyl 25 5,6-dimethyl-thieno[2,3-D]-4-pyrimidinyI 26 2-methyl-mercaptophenyl 27 2-(tert.-butyl)-5-(trifluoromethyl)pyrazolo[1 ,5 27 A]-7-pyrimidinyl 28 benzyloxyphenyl 29 5-cyano-6-methyl-2-nicotinic acid ethyl ester 30 3,5-dichlorophenyI HOI 185"C 31 3,4-dichlorophenyl HCI 176 0 C 32 2,4-difluorophenyl HCI 165 0 C 33 4-trifluorophenyl HOI 15C 30 Example 1: Capsules containing N-sulfamoyl-N'-phenylpiperazine hydrochloride: Capsules with the following composition per capsule were produced: N-Sulfamoyl-N'-phenylpiperazine hydrochloride 70 mg Corn starch 60 mg Lactose 250 mg Ethylacetate (= EA) q.s, The active substance, the corn starch and the lactose are processed into a homogeneous pasty mixture using EA. The paste is ground and the resulting granules are placed on a suitable tray and dried at 450C in order to remove the solvent. The dried granules are passed through a crusher and mixed in a mixer with the further following auxiliaries: Talcum 5 mg Magnesium stearate 5 mg Corn starch 10 mg and are then poured into 400 mg capsules (= capsule size 0). Comprises/comprising and grammatical variations thereof when used in this speci fication are to be taken to specify the presence of stated features, integers, steps or com ponents or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

Claims

1. The use of a compound of Formula 1, 0 Ar-N N-S-NH I 0 wherein Ar is monocyclic or bicyclic C6. 10 -aryl, whose ring carbon atoms are optionally replaced one to three times by nitrogen, oxygen and/or sulphur, and/or whose C. 10 -aryl ring system optionally contains three to five double bonds, and/or whose C- 1 0 -aryl ring system is optionally substituted by one, two or three substitu ents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C 14 -alkyl, Cl4-alkoxy, Co 4 -alkoxyphenyl, C 1 4 -alkylthio, C2 alkanoyl, C4-alkyloxycarbonyl, Cl4-alkylsulfonyl; and two oxygen atoms which are bonded to two adjacent carbon atoms of the C 6 . 10 -aryl ring system and which are bridged by C 2 -alkylen; or whose C6-1 0-aryl ring system is substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C1-4 alkyl, C1-4-alkoxy, Cl-4-alkylthio, C2-4-alkanoyl, Cl-4-alkyloxycarbonyl, C1-4-alkyl sulfonyl; two oxygen atoms which are bonded to two adjacent carbon atoms of the C6-10-aryl ring system and which are bridged by C1-2-alkylen; or whose C6-10-aryl ring system is substituted by thieny, naphthyl, pyridyl; phenyl or benzyl, each of which phenyl or benzyl being optionally substituted in the phenyl ring by one, two or three substituents which may be the same or different and which may be selected from halogen, trifluoromethyl, cyano, C1-6-alkyl, C1-4-alkoxy or Cl-4-alkylsulfonyl; and of its physiologically compatible acid addition salts, in the preparation of a medica ment for the prophylaxis or treatment of obesity in mammals and humans. 32

2. The use of a compound of Formula I and of its physiologically compatible acid addition salts according to claim 1, wherein Ar is phenyl, optionally substituted by one, two or three substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C 14 -alkyl, C14 alkoxy, C 4 -alkoxyphenyl, C 14 -alkylthio, C 24 -alkanoyl, C. 4 -alkyloxycarbonyl, Cw alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 -alkylen; or is phenyl substituted by phenyl or benzyl, each of which optionally being substituted in the phenyl ring by one or two substituents which may be the same or different and which may be selected from halogen, trifluoromethyl, C 14 -alkyl and Cw4alkoxy; or is naphthyl; pyridyl; pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; 1,2,3,4-tetrahydroisoquinolinyl; indolyl; isoindoliny; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5-a]pyrimidiny, each being optionally substituted by one or two substitu ents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C-alkyl, C 14 -alkoxy and C 4 -alkyloxycarbonyl.

3. The use of a compound of Formula I and of its physiologically compatible acid addition salts according to any of claims 1 or 2, wherein Ar is phenyl, optionally substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hy droxy, hydroxycarbamoyl, trifl uo rom ethyl, cyano, nitro, C 1 4 -alkyl, C 1 4 -alkoxy, C2A alkanoyl, C 4 -alkyloxycarbonyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 1 . 2 -alkylen; or is pyridyl; pyrimidinyl; naphthyl; quinolinyl; isoquinolinyl; 1,2,3,4-tetrahydroisoquino linyl; indolyl or isoindolinyl, each optionally being substituted by one or two substitu ents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C 4 -alkyl, C r4alkoxy and C 4 -alkyloxycarbonyl.

4. The use of a compound of Formula I and of its physiologically compatible acid addition salts according to any of claims 1 to 3, wherein Ar is phenyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxy, 33 trifluoromethyl, cyano, nitro, C 4 -alkyl, C 4 -alkoxy, C 24 -alkanoyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by Cwr alkylen; or is pyridyl; pyrimidinyl or quinolinyl; each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, nitro, Cl-alkyl and C14 alkoxy.

5. A compound of Formula la, 0 Ar 1 -N N-S-NH 2 Ia wherein Ar is phenyl, optionally substituted by one, two or three substituents which may be the same or different and which may be selected from the group consisting of halogen, carboxy, hydroxy, hydroxycarbamoyl, cyano, nitro, Cwa-alkyl, C 4 -alkoxy, CO- 4 alkoxyphenyl, C 4 -alkylthio, C 24 -alkanoyl, C-alkyloxycarbonyl, Cl-alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 alkylen; or is phenyl substituted by phenyl or benzyl, each of which optionally being substituted in the phenyl ring by one or two substituents which may be the same or different and which may be selected from halogen, C 1 . 4 -alkyl, C 14 -alkoxy and trifluoromethyl; or is naphthyl; pyridyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; 1,2,3,4-tetrahydroisoquinolinyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5-a]pyrimidinyl each optionally being substituted by one or two substitu ents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C 14 -alkyl, C1 4 -alkoxy and Cw- 4 -alkyloxycarbonyl; and its physiologically compatible acid addition salts for the use as a medicament for mammals and humans.

6. A compound of Formula la and its physiologically compatible acid addition salts for the use as medicaments for mammals and humans according to claim 11, wherein 34 Ar is phenyl, optionally substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hy droxy, hydroxycarbamoyl, cyano, nitro, C 1 - 4 -alkyl, C 1 4 -alkoxy, C 24 -alkanoyl, C 1 -4 alkyloxycarbonyl, C 1 4 -alkylsulfonyland two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 -alkylen; or is naphthyl; pyridyl; 5-pyrimidinyl; quinolinyl; isoquinolinyl; 1,2,3,4-tetrahydro isoquinolinyl; indoly or isoindolinyl, each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, C 1 . 4 -alkyl, C 14 -alkoxy and C 1 4 -alkyloxycarbonyl.

7. A compound of Formula la and its physiologically compatible acid addition salts for the use as medicaments for mammals and humans according to claims 5 or 6, wherein Ar is phenyl, optionally substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hy droxy, cyano, nitro, C 1 . 4 -alkyl, C 14 -alkoxy, C 24 -alkanoyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 -alkylen; or is pyridyl; 5-pyrimidinyl or quinolinyl; each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, nitro, C 14 -alkyl and C 1 4 alkoxy.

8. A compound of Formula la and its physiologically compatible acid addition salts for the use as medicaments for mammals and humans according to any one of claims 5 to 7, wherein Ar' is phenyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, C 14 -alkyl, C 1 4 alkoxy and C 4 -alkylsulfonyl; or is pyridyl; 5-pyrimidinyl or quinolinyl; each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano C 14 -alkyl and C 14 -alkoxy. 35

9. A compound of Formula la and its physiologically compatible acid addition salts for the use as medicaments for mammals and humans according to any one of claims 5 to 8, selected from the group consisting of 4-phenyl-piperazine-1-sulfonic acid amide; 4-(2-chloro-phenyl)-piperazine-1-sulfonic acid amide; and 4-(2-methoxy-phenyl)-piperazine-1 -sulfonic acid amide.

10. A pharmaceutical composition comprising a pharmacologically effective quan tity of a compound of Formula la according to claim 11 or its physiologically compatible acid addition salts and conventional pharmaceutically acceptable auxiliaries and/or carri e rs.

11. A compound of Formula lb, 0 Ar 2 -N\ N-S-NH 2 lb wherein Ar 2 is phenyl substituted once by 3-chloro, bromo, iodo, hydroxy, C2 4 -alkoxy, Co4 alkoxyphenyl, C 14 -alkylthio, C 2 4-alkanoyl, C 14 -alkyloxycarbonyl, hydroxycarbamoyl, carboxy, cyano, nitro, two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 12 -alkylen, and C 4 -alkylsulfonyl; or is phenyl substituted by two or three substituents which may be the same or differ ent and which may be selected from the group consisting of carboxy, hydroxy, hy droxycarbamoyl, trifluoromethyl, cyano, nitro, C 4 -alkyl, C 4 -alkoxy, C 1 . 4 -alkylthio, C 24 -alkanoyl, C 4 -alkyloxycarbonyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or is phenyl substituted once by phenyl or benzyl, each of which optionally being sub stituted in the phenyl ring by one or two substituents which may be the same or dif ferent and which may be selected from halogen, trifluoromethyl, C 4 -alkyl and C4 alkoxy; or is naphthyl; pyridyl; 5-pyrimidinyl; pyrazinyl; pyridazinyl; triazinyl; quinolinyl; isoquino linyl; indolyl; isoindolinyl; thieno[3,2-d]pyrimidinyl or pyrazolo[1,5-a]pyrimidinyl each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxy- 36 carbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C 4 -alkyl, CwA-alkoxy and C 1 4 alkyloxycarbonyl; or is 1,2,3,4-tetrahydroisoquinolinyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxycarbamoyl, trifluoromethyl, cyano, nitro, pyrrolidinyl, C-alkyl, Cw alkoxy and C 4 -alkyloxycarbonyl; and its physiologically compatible acid addition salts.

12. A compound of Formula Ib and its physiologically compatible acid addition salts according to claim 11, wherein Ar 2 is pheny substituted once by 3-chloro, bromo, iodo, hydroxy, cyano, C 24 -alkoxy, C 2 . 4 -alkanoyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon at oms which are bridged by C 2 -alkylen; or is phenyl substituted by two substituents which may be the same or different and which may be selected from the group consisting of halo, hydroxy, trifluoromethyl, cyano, nitro, C 14 -alkyl, C 4 -alkoxy, C 24 -alkanoyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or is pyridyl; 5-pyrimidinyl; naphthyl; quinolinyl; isoquinolinyl; indoly or isoindolinyl, each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, nitro, C 14 -alkyl and C 4 -alkoxy; or is 1,2,3,4-tetrahydroisoquinolinyl substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, nitro, C 14 -alkyl and C 14 -alkoxy.

13. A compound of Formula lb and its physiologically compatible acid addition salts according to claims 11 or 12, wherein Ar2 is phenyl substituted once by 3-chloro, bromo, iodo, hydroxy, cyano, C 24 -alkoxy, C 2 4 -alkanoyl, Cl-alkylsulfonyl and two oxygen atoms bonded to adjacent carbon at oms which are bridged by C 2 -alkylen; or is phenyl substituted by two substituents which may be the same or different and which may be selected from the group consisting of halogen, hydroxy, trifluoro methyl, cyano, nitro, C 4 -alkyl, C 4 -alkoxy, C 24 -alkanoyl, C 4 -alkylsulfonyl and two oxygen atoms bonded to adjacent carbon atoms which are bridged by C 2 -alkylen; or 37 is pyridyl; 5-pyrimidinyl; quinolinyl; each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, nitro, C 14 -alkyl and C 1 4 alkoxy.

14. A compound of Formula lb and its physiologically compatible acid addition salts according to any one of claims 11 to 13, wherein Ar 2 is phenyl substituted once by 3-chloro, bromo, iodo, C 2 A-alkoxy and C 4 -alkyl sulfonyl; or is phenyl substituted by two substituents which may be the same or different and which may be selected from the group consisting of trifluoromethyl, C 4 -alkyl, Cw. 4 alkoxy and C 4 -alkylsulfonyl; or is pyridyl; 5-pyrimidinyl or quinolinyl; each optionally being substituted by one or two substituents which may be the same or different and which may be selected from the group consisting of halogen, trifluoromethyl, cyano, C 1 4 -alkyl and CwA-alkoxy.

15. 4-(4-chloro-3-trifluoromethyl-phenyl)-piperazine-1-sulfonic acid amide; 4-(3-chloro-5-trifluoromethyl-pyridin-2-yl)-piperazine-1 -sulfonic acid amide; and their physiologically compatible addition salts.

16. A pharmaceutical composition comprising a pharmacologically effective quan tity of a compound of Formula lb according to claim 11 or its physiologically compatible acid addition salts and convention pharmaceutically acceptable auxiliaries and/or carriers.

17. A method of treating or preventing obesity in mammals and humans, compris ing administering to a subject in need thereof a therapeutically effective amount of a compound of Formula I according to claim 1 or its physiologically compatible acid addition salts.

18. The use according to any one of claims 1 to 4 substantially as hereinbefore described.

19. A compound according to any one of claims 5 to 8 or 11 to 14 substantially as hereinbefore described. P27909AU00