Patent ID: 7888527

Claim:
A compound having formula (I): wherein X and Y taken together with the atom to which they are attached form a keto group; R 1 is hydrogen, halo, tri-fluoromethyl, (C 1 -C 6 )-alkyl, (C 1 -C 6 ) alkyl substituted with halo, hydroxy, alkoxy, or cyano; R 2 is (C 1 -C 10 )alkyl, (C 3 -C 8 )-cycloalkyl substituted alkyl, (C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, aryl, alkyl substituted aryl, arylalkyl or aryl substituted arylalkyl; or a pharmaceutically acceptable ester or salt thereof.