US Patent 8410177 Curcumin derivatives

A compound has Formula VIII where, X is —C(O)R, —C(O)OR, —CN, —NO2, —S(O)2R′, —P(O)(OR)2; each R is individually H, alkyl, or alkenyl; R′ is alkyl or akenyl; R1 is aryl, alkenyl, arylalkenyl, heterocyclyl, or heteroaryl; and R2, R3, R4, R5, R6, R7, R8, R9, R10, and R11 are individually H, alkoxy, or hydroxy. In some cases, X is NO2.