Patent ID: 8017602

Claim:
A compound or a pharmaceutically acceptable salt thereof, wherein: the compound corresponds in structure to formula (I): W is CH 2 substituted by zero, 1, or 2 CH 3 groups; R 1 is cyclopentyl, cyclohexyl, cycloheptyl, or CH(CH 3 )(C 1-6 alkyl); R 2 is a 5-membered, nitrogen-containing heteroaryl that: optionally has a ring oxygen atom, and is optionally substituted by C 1-6 alkyl, wherein: the C 1-6 alkyl is optionally substituted by C 1-6 alkoxy or C 3-6 cycloalkyl; and R 3 is hydrogen, halogen, C 1-4 alkyl, CF 3 , C 1-4 alkoxy, or OCF 3 .