Patent ID: 7067530

Claim:
A compound of formula (I) wherein X is biphenyl, a fused polycyclic hydrocarbon, or heteroaryl, each of which is optionally substituted with one or more substituents selected from the group consisting of: halogen, perhalomethyl, perhalomethoxy, hydroxy, cyano, amino, C 1-6 -alkylamino, C 3-6 -cycloalkylamino, C 1-6 -dialkylamino, or carboxy; C 1-6 -alkyl, C 3-6 -cycloalkyl, C 2-6 -alkenyl, C 2-6 -alkynyl, C 1-6 -alkoxy, C 3-6 -cycloalkoxy, C 1-6 -alkylthio, or C 3-6 -cycloalkylthio, each of which is optionally substituted with halogen; and wherein Y is H, C 1-6 -alkyl, C 3-6 -cycloalkyl, C 2-6 -alkenyl, C 2-6 -alkynyl, or C 4-6 -alkenynyl; and R 1 is hydrogen or halogen; or R 1 is C 1-6 -alkyl, C 3-6 -cycloalkyl, C 1-6 -alkoxy or C 3-6 -cycloalkoxy, each of which is optionally substituted with one or more substituents selected from the group consisting of halogen, hydroxy, and cyano; and R 2 and R 3 are independently hydrogen, halogen, C 1-6 -alkyl or C 3-6 -cycloalkyl; and R 4 is hydrogen, C 1-6 -alkyl or C 3-6 -cycloalkyl; or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable solvate thereof, or any tautomeric forms, stereoisomers, mixture of stereoisomers including a racemic mixture, or polymorphs.