Patent ID: 7700596

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; which 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 naphthyl group, which naphthyl group is optionally substituted with one or more substituents independently selected from the group consisting of: halo, trifluoromethyl, trifluoromethoxy, cyano, nitro, hydroxy, alkoxy, alkoxyalkyl, and methylenedioxy.