Patent ID: 8304430

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 selected from the group consisting of piperazine and piperidine, optionally substituted with one to four substituents independently selected from the group consisting of: C 1-4 alkyl, carbonyl (substituted with a substituent selected from the group consisting of C 1-4 alkyl, aryl, aryl(C 1-4 )alkyl and aryl(C 2-4 )alkenyl) and aryl; wherein the aryl substituent and 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 alkyl)amino, halogen, hydroxy and (halo) 1-3 (C 1-4 )alkyl; and racemates, enantiomers, diastereomers and salts thereof.