Abstract
The present invention provides a compound having the structure:
wherein R3, R4, R5, R6, and R7 are each independently, H, halogen, CN, —CF3, —OCF3, —NO2, alkyl, alkenyl, alkynyl, aryl, heteroaryl, heterocycle, —OH, —OAc, —OR13, —COR13, —CH2OR13, —SH, —SR13, —SO2R13, —NH2, —NHR13, —NR14R15, —NHCOR12, or —CONR14R15; R9, R10, R11, and R12 are each independently, H, CN, alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl, heterocycloalkyl, —OAc, —COR13, —SH, —SR13, —SO2R13, —NH2, —NHR13, —NR14R15, —NHCOR12, or —CONR14R15; wherein each occurrence of R13 is independently alkyl, alkenyl, alkynyl, aryl, or heteroaryl, wherein each occurrence of R14 is independently —H, alkyl, alkenyl, alkynyl, aryl, or heteroaryl, wherein each occurrence of R15 is independently —H, alkyl, alkenyl, alkynyl, aryl, or heteroaryl, wherein when R14 is methyl, R15 is not methyl; wherein at least one of R9, R10, R11, and R12 is not H; wherein at least one of R3, R4, R5, R6, and R7 is not H.