Compounds, their use and preparation
View Patent ↗The invention-provides 2, 3-, 4- or 5-substituted-N1-(arylsulfonyl)indole and (heteroaryl)indole compounds of the general formula (I): in which Ar, R 2 , R 3 , R 4 and R 5 are as defined in the specification. The compounds bind to the 5-HT 6 receptor and are useful for the treatment and prophylaxis of disorders mediated by the 5-HT 6 receptor, such as obesity and CNS disorders.
1. A method for the treatment of obesity, the method comprising administering to a patient in need thereof a therapeutically effective amount of a compound of formula (I):
wherein
Ar is
(1) phenyl,
(2) naphthyl,
(3) a 5- to 10-membered monocyclic or bicyclic heterocyclic ring having 1 to 4 heteroatoms selected from the group consisting of oxygen, sulfur, or nitrogen, or
(4) —R 9 -phenyl;
wherein the phenyl, naphthyl, or heterocyclic ring is optionally substituted with halogen, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxyl, OCF 3 , COCF 3 , CN, NO 2 , phenyloxy, phenyl, C 1-6 alkylsulfonyl, C 2-6 alkenyl, —NR 7 R 8 , C 1-6 alkylcarboxyl, formyl, —C 1-6 alkyl-NH—CO-phenyl, —C 1-6 alkyl-CO—NH-phenyl, —NH—CO—C 1-6 alkyl, —CO—NR 7 R 8 , or SR 7 ; wherein each of R 7 and R 8 is independently H or C 1-6 alkyl; and R 9 is C 1-6 alkylidene or C 2-6 alkenylene, either of which is optionally substituted with phenyl or phenyloxy;
R 2 is H, phenyl, I, or C 1-6 alkyl;
R 3 is H or 3-(1-azabicyclo[2.2.2]oct-2-en)yl;
R 4 is H or is selected from the group consisting of:
wherein R 6 is H, C 1-6 alkyl, or benzyl; and
R 5 is H, hydroxy, C 1-3 alkoxy, F, NO 2 , CF 3 , OCF 3 , or is selected from the group consisting of:
or a pharmaceutically acceptable salt, hydrate, or stereoisomer thereof,
with the proviso that when R 2 is alkyl, R 4 is not H.
2. The method of claim 1 , wherein
Ar is
(1) phenyl that is unsubstituted or optionally mono- or poly-substituted with halogen, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxyl, OCF 3 , CN, NO 2 , phenyloxyl, phenyl, alkylsulfonyl, C 1-6 alkenyl, —NH 2 , —NHR 7 , —NR 7 R 8 , C 1-6 alkylcarboxyl, formyl, —NH—CO—C 1-6 alkyl, —CO—NR 7 R 8 , or SR 7 wherein each of R 7 and R 8 is independently H or C 1-6 alkyl;
(2) 1-naphthyl or 2-naphthyl that is unsubstituted or optionally mono- or poly-substituted with halogen, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxyl, OCF 3 , CN, NO 2 , phenyloxyl, phenyl, alkylsulfonyl, C 2-6 alkenyl, —NH 2 , —NHR 7 , —NR 7 R 8 , C 1-6 alkylcarboxyl, formyl, —NH—CO—C 1-6 alkyl, —CO—NR 7 R 8 , or SR 7 wherein each of R 7 and R 8 is independently H or C 1-6 alkyl;
(3) —C 2-6 alkenylene-phenyl;
(4) benzyl;
(5) 1,1-diphenylethyl;
(6) a monocyclic or bicyclic heterocyclic ring selected from the group consisting of furyl, pyrrolyl, triazolyl, diazolyl, oxazolyl, thiazolyl, oxadiazolyl, isothiazolyl, isoxazolyl, thiadiazolyl, pyrimidyl, pyrazinyl, thienyl, imidazolyl, pyrazolyl, indolyl, quinolinyl, isoquinolinyl, benzofuryl, benzothienyl, and benzoxadiazolyl, said heterocyclic ring being optionally mono- or di-substituted substituted with halogen or C 1-6 alkyl;
R 4 is H or is selected from the group consisting of:
wherein R 6 is H, C 1-6 alkyl, or benzyl; and
R 5 is H, hydroxy, C 1-3 alkoxy, F, NO 2 , CF 3 , OCF 3 or is selected from the group consisting of:
3. The method of claim 1 , wherein
Ar is
(1) phenyl,
(2) 1-naphthyl or 2-naphthyl,
(3) a 5- to 10-membered monocyclic or bicyclic heterocyclic ring having 1 to 4 hetero atoms selected from the group consisting of oxygen, sulfur, or nitrogen, or
(4) —R 9 -phenyl;
wherein the phenyl, naphthyl, or heterocyclic ring is optionally substituted with F, Cl, Br, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxyl, OCF 3 , phenyl, C 2-6 alkenyl, —NR 7 R 8 , —NH—CO—C 1-6 alkyl, or SR 7 , wherein each of R 7 and R 8 is independently H or C 1-6 alkyl; and R 9 is C 1-2 alkylidene;
R 2 is H, phenyl, I, or C 1-6 alkyl;
R 4 is selected from the group consisting of:
and
R 5 is C 1-3 alkoxy or a heterocyclic ring selected from the group consisting of:
4. The method of claim 1 , wherein Ar is phenyl, optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 , where each of R 7 and R 8 is independently H or methyl.
5. The method of claim 1 , wherein Ar is 1-naphthyl or 2-naphthyl, each of which is optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 , where each of R 7 and R 8 is independently H or methyl.
6. The method of claim 1 , wherein Ar is a heterocyclic ring selected from the group consisting of furyl, pyrrolyl, triazolyl, diazolyl, oxazolyl, thiazolyl, oxadiazolyl, isothiazolyl, isoxazolyl, thiadiazolyl, pyridinyl, pyrimidyl, pyrazinyl, thienyl, imidazolyl, pyrazolyl, indolyl, quinolinyl, isoquinolinyl, benzofuryl, benzothienyl, and benzoxadiazolyl, each of which is optionally substituted with halogen, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, C 1-6 alkylsulfonyl, C 2-6 alkenyl, —NR 7 R 8 , C 1-6 alkylcarboxyl, formyl, —NH—CO—C 1-6 alkyl, —CO—NR 7 R 8 , or SR 7 ; wherein each of R 7 and R 8 is independently H or C 1-6 alkyl.
7. The method of claim 1 , wherein Ar is a heterocyclic ring selected from the group consisting of pyridinyl, thienyl, imidazolyl, pyrazolyl, benzothienyl, and benzoxadiazolyl, each of which is optionally substituted with halogen or C 1-6 alkyl.
8. The method of claim 1 , wherein Ar is 2-pyridyl, 3-pyridyl, or 4-pyridyl.
9. The method of claim 1 , wherein Ar is a 5- to 7-membered aromatic, partially saturated, or completely saturated heterocyclic ring having 1 to 4 heteroatoms selected from the group consisting of O, S, or NR 10 , where R 10 is H, C 1-6 alkyl, —CO—CF 3 .
10. The method of claim 1 , wherein Ar is —R 9 -phenyl, wherein R 9 is C 1-3 alkylidene or C 2-3 alkenylene, either of which is optionally substituted with phenyl or phenyloxy, each phenyl being optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 ; and each of R 7 and R 8 being independently H or C 1-6 alkyl.
11. The method of claim 1 , wherein each of R 2 and R 3 is H.
12. The method of claim 1 , wherein each of R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
R 5 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl.
13. The method of claim 1 , wherein Ar is phenyl, optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 where each of R 7 and R 8 is independently H or methyl; each of R 2 and R 3 is H; R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
R 5 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
14. The method of claim 1 , wherein Ar is 1-naphthyl or 2-naphthyl, each of which is optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 , where each of R 7 and R 8 is independently H or methyl; each of R 2 and R 3 is H; and each of R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
R 5 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl.
15. The method of claim 1 , wherein Ar is a heterocyclic ring selected from the group consisting of pyridinyl, thienyl, imidazolyl, pyrazolyl, benzothienyl, and benzoxadiazolyl, each being optionally substituted with halogen or C 1-6 alkyl; each of R 2 and R 3 is H; R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
R 5 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl.
16. The method of claim 1 , wherein Ar is 2-pyridyl, 3-pyridyl, or 4-pyridyl; each of R 2 and R 3 is H; R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; and
R 5 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl.
17. The method of claim 1 , wherein Ar is —R 9 -phenyl; each of R 2 and R 3 is H; R 4 is H or a heterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl;
R 5 is H or a geterocyclic ring selected from the group consisting of:
wherein R 6 is H, C 1-3 alkyl, or benzyl; R 9 is C 1-3 alkylidene or C 2-3 alkenylene, either of which is optionally substituted with phenyl or phenyloxy; each phenyl being optionally substituted with F, Cl, Br, methyl, CF 3 , C 1-4 alkoxyl, OCF 3 , CN, NO 2 , phenyloxy, phenyl, methylsulfonyl, or —NR 7 R 8 ; and each of R 7 and R 8 being independently H or C 1-6 alkyl.
18. A method for the treatment of obesity, comprising administering to a patient in need thereof a therapeutically effective amount of 1-[(2,5-dimethoxyphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole or a pharmaceutically acceptable salt thereof.
19. A method for the treatment of obesity, comprising administering to a patient in need thereof a therapeutically effective amount of 4-(1-piperazinyl) -1-(3-pyridinylsulfonyl)-1H-indole, or a pharmaceutically acceptable salt thereof.
20. A method for the treatment of obesity, comprising administering to a patient in need thereof a therapeutically effective amount of a compound selected from the group consisting of:
1-phenylsulfonyl-4-piperazinylindole,
1-[(2,5-dimethoxyphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-(mesitylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-(1-naphthylsulfonyl)-4-(1-piperazinyl)-1H-indole;
N,N-dimethyl-5-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}-1-naphthalenamine;
1-[(4-propoxyphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(2,5-dichloro-3-thienyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(4-methoxyphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(2,4-difluorophenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-([1,1′-biphenyl]-4-ylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-[(3,4-dimethoxyphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
5-methyl-2-methoxyl-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}phenyl ether;
1-[(2,5-dichlorophenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(5chloro-1,3-dimethyl-1H-pyrazol-4-yl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(3-chloro-2-methylphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
2-chloro-5-(4-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}phenoxy)benzonitrile;
4-bromo-2-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}phenyl methyl ether;
4-(1-piperazinyl)-1-(3-pyridinylsulfonyl)-1H-indole;
7-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}-2-(trifluoroacetyl)-1,2,3,4-tetrahydroisoquinoline;
methyl2-{[4-(1-piperazinyl)-1H-indol-1-yl]sulfonyl}phenyl sulfone;
1-[(4-fluorophenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(5-chloro-3-methyl-1-benzothien-2-yl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
4-(4-methyl-1-piperazinyl)-1-(4-methylbenzenesulfonyl)-1H-indole;
4-piperazino-N-[(4-trifluoromethyl)phenylsulfonyl]indole;
4-(3-methylpiperazine)-N-((4-trifluoromethyl)phenylsufonyl)indole;
4-(4-methyl-1-piperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-(4-ethyl-1-piperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-(1-piperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
2-{1-[(2-methylphenyl)sulfonyl]-1H-indol-4-yl}octahydropyrrolo[1,2-a]pyrazine;
4(4-methyl-1-homopiperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-(3-methyl-1-piperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-(cis-3,5-dimethyl-1-piperazinyl)-1-(2-methylbenzenesulfonyl) -1H-indole;
4-(4-isopropyl-1-piperazinyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-((1S,4S)-2-methyl-2,5-diazabicyclo[2.2.1]heptyl)-1-(2-methylbenzenesulfonyl)-1H-indole;
4-(4-methyl-1-homopiperazinyl)-1-(benzenesulfonyl)-1H-indole;
4-(cis3,5-dimethyl-1-piperazinyl)-1-(benzenesulfonyl)-1H-indole;
4-(4-ethyl-1-piperazinyl)-1-(benzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-nitro-benzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-bromo-benzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-chloro-benzenesulfonyl)-1H-indole;
4-piperazinyl-1-(E2-phenyl-ethensulfonyl)-1H-indole;
4-piperazinyl-1-(3-trifluoromethyl-benzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-cyanobenzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-chloro-7-chloro-2,1,3-benzoxadiazole sulfonyl)-1H-indole;
4-piperazinyl-1-(3-cyanobenzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-phenoxybenzenesulfonyl)-1H-indole;
4-piperazinyl-1-(4-chlorophenylmethanesulfonyl)-1H-indole;
4-piperazinyl-1-(4-methylphenylmethanesulfonyl)-1H-indole;
4-piperazinyl-1-(1,1-diphenylethanesulfonyl)-1H-indole;
4-piperazinyl-1-(4-trifluoromethoxybenzenesulfonyl)-1H-indole;
4-piperazinyl-1-(5-[(benzoylamino)methyl]thiophene-2-sulfonyl)-1H-indole;
1-[(N-methyl-1H-imidazol-4-yl)sulfonyl]-4-(1-piperazinyl) -1H-indole;
N-benzenesulfonyl-5-(4-methylpiperazin-1-yl)-indole;
N-(4-methylbenzenesulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
N-benzenesulfonyl-5-(4-isopropylpiperazin-1-yl)-indole;
N-(4-methylbenzenesulfonyl)-5-(4-isopropylpiperazin-1-yl)-indole;
N-(3,4-dimethoxybenzenesulfonyl)-5-(4-propylpiperazin-1-yl)-indole;
N-(3-fluorobenzenesulfonyl)-5-(4-propylpiperazin-1-yl)-indole;
N-(4-propylbenzenesulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
5-(4-methyl-1-piperazinyl)-1-(1-naphthylsulfonyl)-1H-indole;
N-(biphenyl-4-sulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
N-(4-methoxybenzenesulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
N-(3,4-dimethoxybenzenesulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
N-(2,4-difluorobenzenesulfonyl)-5-(4-methylpiperazin-1-yl)-indole;
N-(4-methoxybenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(2,4-difluorobenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(4-butoxybenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(3,4-dimethoxybenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(biphenyl-4-sulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(napthalene-2-sulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(4-propylbenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(3-fluorobenzenesulfonyl)-5-(4-benzylpiperazin-1-yl)-indole;
N-(4-methoxybenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-(2,4-difluorobenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-(4-butoxybenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-(3,4-dimethoxybenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-(biphenyl-4-sulfonyl)-5-(piperazin-1-yl)-indole;
N-(napthalene-2-sulfonyl)-5-(piperazin-1-yl)-indole;
N-(4-propylbenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-(3-fluorobenzenesulfonyl)-5-(piperazin-1-yl)-indole;
N-benzenesulfonyl-5-(piperazin-1-yl)-indole;
3-(1-azabicyclo[2.2.2]oct-2-en-3-yl)-1-[(4-fluorophenyl)sulfonyl]-1H-indole;
2-iodo-1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole;
2-phenyl-1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole;
4-piperazinyl-2-methyl-1-benzosulfonylindole; and
1-phenylsulfonyl-4-(homopiperazinvl)-indole; or a pharmaceutically acceptable salt of any thereof.
21. A method for the treatment of obesity, the method comprising administering to a patient in need thereof a therapeutically effective amount of a compound having the following formula:
wherein
R 1 is Ar or alkyl; wherein Ar is phenyl, optionally substituted with F, Cl, Br, C 1-6 alkyl, CF 3 , hydroxyl, C 1-6 alkoxy, OCF 3 , NO 2 , amino, alkylamino, dialkylamino, methylcarboxyl, aminocarbonyl, or SR 7 ; wherein R 7 is H or C 1-6 alkyl; 1-naphthyl, 2-naphthyl; a bicyclic heterocyclic ring or a 5- to 7-membered partially or completely saturated heterocyclic ring each having 1 to 4 heteroatoms selected from the group consisting of oxygen, sulfur, or nitrogen; and alkyl is linear or branched C 1-6 alkyl;
R 2 is H or linear or branched C 1-4 alkyl;
R 3 is H, or 3-(1-azabicyclo[2.2.2]oct-2-en)yl, or 3-quinuclidinyl;
each R 4 is H or is selected from the group consisting of the following amine groups:
wherein R 6 is H or a linear or branched C 1-6 alkyl; and
R 5 is R 4 or H, hydroxy, C 1-3 alkoxy, F, NO 2 , CF 3 , OCF 3 ;
or a pharmaceutically acceptable salt or stereoisomer thereof.
22. The method of claim 21 , wherein
R 1 is Ar in which Ar is phenyl substituted with F or C 1-6 alkyl, 1-naphthyl, or 2-naphthyl;
R 2 is H or propyl;
R 4 is selected from the group consisting of:
wherein R 6 is H; and
R 5 is H or C 1-3 alkoxy.
23. A method for the treatment of obesity, the method comprising administering to a patient in need thereof a therapeutically effective amount of a compound selected from the group consisting of:
1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-[(4-fluorophenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
1-[(5-chloro-3-methyl-1-benzothien-2-yl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
3-(1-azabicyclo[2.2.2]oct-2-en-3-yl)-1-(phenylsulfonyl)-1H-indole;
5-methoxy-1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole;
4-(4-ethyl-1-piperazinyl)-1-(phenylsulfonyl)-1H-indole;
1-[(4-methylphenyl)sulfonyl]-4-(4-methyl-1-piperazinyl)-1H-indole;
1-(phenylsulfonyl)-5-(1-piperazinyl)-1H-indole;
4-(2,5-dimethyl-1-piperazinyl)-1-(phenylsulfonyl)-1H-indole;
4-(2,6-dimethyl-1-piperazinyl)-1-(phenylsulfonyl)-1H-indole
4-(1,4-diazepan-1-yl)-1-(phenylsulfonyl)-1H-indole;
2-[1-(phenylsulfonyl)-1H-indol-4-yl]octahydropyrrolo[1,2-a]pyrazinyl-(2-naphthylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-(1-naphthylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-[(4-methylphenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole;
N-(1-azabicyclo[2.2.2]oct-3-yl)-N-{1-[(4-methylphenyl)sulfonyl]-1H-indol-4-yl}amine;
2-ethyl-4-(4-ethyl-1-piperazinyl)-1-[(phenyl)sulfonyl]-1H-indole;
4-(2,5-dimethyl-1-piperazinyl)-2-ethyl-1-(phenylsulfonyl)-1H-indole;
4-(2,5-dimethyl-1-piperazinyl)-1-[(4-methylphenyl)sulfonyl]-2-propyl-1H-indole;
4-(4-ethyl-1-piperazinyl)-1-[(4-methylphenyl)sulfonyl]-2-propyl-1H-indole;
4-(4-ethyl-1-piperazinyl)-5-fluoro-1-[(4-methylphenyl)sulfonyl]-1H-indole;
5-fluoro-4-(1-piperazinyl)-1-{[4-(trifluoromethyl)phenyl]sulfonyl}-1H-indole;
5-chloro-1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole;
1-[(5-chloro-3-methyl-1-benzothien-2-yl)sulfonyl]-5-methoxy-4-(1-piperazinyl)-1H-indole;
1-[(5-chloro-3-methyl-1-benzothien-2-yl)sulfonyl]-5-(1-piperazinyl)-1H-indole;
1-[(4-methylphenyl)sulfonyl]-4-(3-methyl-1-piperazinyl)-1H-indole; and
1-[(4-methylphenyl)sulfonyl]-4-(piperidinyloxy)-1H-indole
or a pharmaceutically acceptable salt of any thereof.
24. The method of claim 21 , wherein the compound is 1-[(4-fluorophenyl)sulfonyl]-4-(1-piperazinyl)-1H-indole or a pharmaceutically acceptable salt thereof.
25. A method for the treatment of obesity, the method comprising administering to a patient in need thereof a therapeutically effective amount of 1-[(5-chloro-3-methyl-1-benzothien-2-yl)sulfonyl]-4-(1-piperazinyl)-1H-indole or a pharmaceutically acceptable salt thereof.
26. The method of claim 21 , wherein the compound is 1-(phenylsulfonyl)-4-(1-piperazinyl)-1H-indole or a pharmaceutically acceptable salt thereof.