Patent ID: 7214674

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: A is phenyl, naphthyl, indolyl, quinolinyl, quinazolinyl, indazolyl, isoquinolinyl or benzofuranyl; any of which is optionally substituted by 1 to 4 substituents, which may be the same or different, and which are selected from the following group: halogen, hydroxy, cyano, CF 3 , C 1-6 alkyl, C 1-6 alkoxy, C 1-6 alkoxyC 1-6 alkoxyC 1-6 alkyl, C 3-7 cycloalkylC 1-6 alkoxy, C 1-6 alkanoyl, C 1-6 alkylsulfonyl, C 1-6 alkylsulfinyl, C 1-6 alkylsulfonyloxy, C 1-6 alkylsulfonylC 1-6 alkyl, C 1-6 alkylsulfonamido, C 1-6 alkylamido, C 1-6 alkylsulfonamidoC 1-6 alkyl and C 1-6 alkylamidoC 1-6 alkyl; X is carbon, Y is CH and is a double bond; or X is CH, Y is CH 2 or oxygen and is a single bond; or X is nitrogen, Y is CH 2 and is a single bond; R1 is halogen, cyano, or C 1-6 alkoxy; a is 0, 1, 2 or 3; b is 0 or 1; R2 is hydrogen, C 1-6 alkyl, C 1-6 alkanoyl, fluoroC 1-6 alkanoyl, C 1-6 alkylsulfonyl, fluoroC 1-6 alkylsulfonyl, carbamoyl, C 1-6 alkylcarbamoyl or arylC 1-6 alkyl; and R3, together with the nitrogen atom to which it is attached, forms an optionally substituted benzoxazinone, benzoimidazolyl, quinoxalinyl or quinolinyl group.