Patent ID: 7368453

Claim:
A compound of formula IA, IB, or mixtures thereof, or pharmaceutically acceptable salts of the compound, wherein R 1 is selected from substituted or unsubstituted arylalkyl, heteroarylalkyl, aryl, heteroaryl, heterocyclyl, cycloalkyl, heterocyclylalkyl, cycloalkylalkyl, alkenyl, alkynyl, or alkyl groups; R 2 is selected from H or substituted or unsubstituted arylalkyl, heteroarylalkyl, alkoxy, alkylamino, dialkylamino, aryl, heteroaryl, heterocyclyl, cycloalkyl, heterocyclylalkyl, cycloalkylalkyl, alkenyl, alkynyl, or alkyl groups; R 3 , R 4 , and R 5 are independently selected from H, Cl, I, F, Br, OH, NH 2 , CN, NO 2 , or substituted or unsubstituted alkoxy or alkyl groups; R 3 ′ is selected from H or substituted or unsubstituted aryl, alkyl, alkenyl, alkynyl, cycloalkyl, heteroaryl, heterocyclyl, heterocyclylalkyl, arylalkyl, heteroarylalkyl, or cycloalkylalkyl groups; and Z is selected from a piperazinone of formula which may be substituted or unsubstituted.