Patent ID: 8729270

Claim:
A compound having the formula or a pharmaceutically acceptable salt thereof, wherein R 1 =substituted alkyl, wherein the substituted alkyl consists of an alkene, an alkyne, an alcohol, an epoxide, a ketone, an ester, an ether, an aldehyde, a nitrile, a nitro, a thiol, a thioester, a sulfide, a disulfide, a sulfone, a sulfoxide, an amine, an amide, a urea, or a carbamate, wherein R 1 is mono or polysubstituted; R 2 =H, alkyl, substituted alkyl, cycloalkyl, aryl, heteroaryl, substituted heteroaryl, or heterocylic, forming a 1,4- or 1,5-disubstitution; R 3 =H or O; A, B, C, D, and E are each independently selected from C and N; Y=NH, O, or CH 2 ; and n=0, 1, 2, 3, 4, or 5.