A compound having a structure represented by formula (I) ** Formula ** wherein R1 is H, C1-C10 substituted or unsubstituted C2-C10 substituted or unsubstituted C2-C10 substituted or substituted aryl, substituted or unsubstituted, substituted or unsubstituted heteroaryl, (CH2) 1-2O (C1-C10) substituted or unsubstituted, (CH2) 1-2O (C2-C10) substituted or unsubstituted, (CH2 ) 1-2O (C2- C10 alkynyl) substituted or unsubstituted, (CH2) 1-2OC (> = O) (C1-C10), (CH2) 1-2OC (> = O) (C2-C10) substituted or unsubstituted, (CH2) 1-2OC (> = O) (C2-C10) substituted or unsubstituted, C (> = O) (C1-C10) substituted or unsubstituted, C (> = O) (C2-C10) substituted or unsubstituted, C (> = O) (C2-C10) substituted or unsubstituted, substituted cycloaliphatic or unsubstituted, substituted heterocycloaliphatic or unsubstituted, substituted aryl or unsubstituted or substituted alkylaryl or substituted R2 is H, C1-C10 alkyl substituted or unsubstituted C2-C10 substituted or unsubstituted C2-C10 substituted or unsubstituted aryl, substituted or unsubstituted, substituted or unsubstituted heteroaryl, (CH2) 1-2O ( C1-C10) substituted or unsubstituted, (CH2) 1-2O (C2-C10) substituted or unsubstituted, (CH2) 1-2O (C2- C10 alkynyl) substituted or unsubstituted, (CH2) 1-2OC (> = O) (C1-C10), (CH2) 1-2OC (> = O) (C2-C10) substituted or unsubstituted, (CH2) 1-2OC (> = O) (C2-C10 ) substituted or unsubstituted, C (> = O) (C1-C10) substituted or unsubstituted, C (> = O) (C2-C10) substituted or unsubstituted, C (> = O) (C2- alkynyl C10) substituted or unsubstituted, substituted or unsubstituted cycloaliphatic, heterocycloaliphatic substituted or unsubstituted arylalkyl or substituted or unsubstituted alkyl substituted or unsubstituted, or ** ** Formula wherein each R2a is independently H, NH2, NHMe, Cl, F, me, Et or CN R3a and R3b are independently H, C1-C5, CH2 (C5-C6), CH2C6H5, CH2CH2OH or C6H5 R4 is Formula ** ** ** or ** Formula wherein R4a is H or C1-C3 alkyl and Y is H, OH, Cl, F, CN, Me, Et
