Patent ID: 7795297

Claim:
An indole compound corresponding to formula I: wherein R a and R b are independently selected from the group consisting of hydrogen, halogen, C 1 -C 6 alkyl, CF 3 , CN, CO—R 2 , OR 2 and phenyl optionally substituted by C 1 -C 4 alkyl or CF 3 ; R 2 is C 1 -C 4 alkyl, CF 3 or phenyl optionally substituted by C 1 -C 4 alkyl or CF 3 ; R 3 and R 4 are independently hydrogen or C 1 -C 4 alkyl; R is hydrogen or C 1 -C 3 alkyl; n is 1, 2 or 3; X is a single bond, an oxygen atom or a sulfur atom; and Ar is an aromatic or heteroaromatic ring selected from the group consisting of phenyl, naphthyl, quinolinyl, isoquinolinyl, pyridinyl, pyrazolyl, imidazolyl, isoxazolyl, thiazolyl, benzimidazolyl, benzothiazolyl, 2,1,3-benzothiadiazolyl, 3,4-dihydro-1,4-benzoxazinyl, 5,6,7,8-tetrahydronaphthalenyl, 1,2,3,4-tetrahydroquinolinyl, 1,2,3,4-tetrahydroisoquinolinyl, 1,2,3,4-tetrahydro-2-oxoquinolinyl, 3,4-dihydro-2H-benzopyranyl, indolyl, 2,3-dihydroindolyl, benzofuranyl, 2,3-dihydrobenzofuranyl, 1,3-benzodioxolyl, 1,4-benzodioxanyl and benzoxazolyl optionally substituted by one or more substituents selected from the group consisting of halogen, C 1 -C 6 alkyl, phenyl, CF 3 , CN, CO—R 2 , OR 2 , SR 2 , NH—COR 2 , morpholinyl, amino and 4-morpholinosulfonyl; or a pharmaceutically acceptable salt thereof.