Patent ID: 8461195

Claim:
A compound of Formula (Ia): wherein: R 7 is selected from the group consisting of hydrogen, C 1-8 alkyl and C 2-8 alkenyl; and, R 8 is pyrrolidinyl, optionally substituted with carbonyl, said carbonyl substituted with a substituent selected from the group consisting of C 1-4 alkyl, aryl, arylC 1-4 alkyl and arylC 2-4 alkenyl; wherein the aryl portions of the carbonyl substituent are optionally substituted with one to two substituents independently selected from the group consisting of C 1-4 alkyl, C 1-4 alkoxy, di C 1-4 alkylamino, halogen, hydroxy and (halo) 1-3 (C 1-4 )alkyl; and racemates, enantiomers, diastereomers and salts thereof.