Patent ID: 7687517

Claim:
A compound of Formula (I): any of its stereoisomers or any mixture of its stereoisomers, or a pharmaceutically acceptable salt thereof; wherein R a represents hydrogen or alkyl; said alkyl is optionally substituted with one or more substituents independently selected from the group consisting of: halo, trifluoromethyl, trifluoromethoxy, cyano, hydroxy, amino, nitro, alkoxy, cycloalkoxy, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl and alkynyl; and R b represents a quinolinyl group, said quinolinyl group is optionally substituted with one or more substituents selected from the group consisting of halo, trifluoromethyl, trifluoromethoxy, cyano, nitro, hydroxy and alkoxy.