Patent ID: 8541428

Claim:
A compound represented by the structure of Formula II: wherein R 1 is oxo, R 2 is a group of the formula A and is a single bond; or R 1 is a group of the formula A, R 2 is absent and is a double bond; A is represented by the structure: R 3 and R 4 are each independently selected from the group consisting of a linear or branched C 1 -C 6 alkyl, a linear or branched C 2 -C 6 alkenyl, a C 3 -C 8 cycloalkyl, heterocyclyl, aryl, heteroaryl, halo, hydroxy, alkoxy, aryloxy, amino, cyano and nitro; R 5 and R 6 are each independently selected from the group consisting of hydrogen, a linear or branched C 1 -C 6 alkyl, a linear or branched C 2 -C 6 alkenyl, a C 3 -C 8 cycloalkyl, heterocyclyl, aryl and heteroaryl; X is selected from the group consisting of a bond, —O—, —S—, and —CR 8 R 9 , wherein R 8 and R 9 are independently selected from the group consisting of hydrogen and a linear or branched C 1 -C 6 alkyl; m is 0, 1, 2, 3 or 4; and n is 0, 1, 2, 3, 4 or 5; including salts, optical isomers, geometrical isomers, enantiomers, diastereomers, and mixtures thereof.