Patent ID: 7582764

Claim:
A compound represented by formula III: wherein, independently for each occurrence: R represents a substituted or unsubstituted alkenyl, alkynyl, aryl, aralkyl, heteroaryl, heteroaralkyl, heterocyclic, heterocycloalkyl, —C(═O)-alkyl, —C(═O)-alkenyl, —C(═O)-alkynyl, —C(═O)-heteroaralkyl, —C(═O)-heterocycloalkyl, —C(═S)N(H)-alkyl, —C(═S)N(H)-alkenyl, —C(═S)N(H)-alkynyl, —C(═S)N(H)-aryl, —C(═S)N(H)-aralkyl, —C(═S)N(H)-heteroaryl, —C(═S)N(H)-heteroaralkyl, —C(═S)N(H)-heterocyclic, or —C(═S)N(H)-heterocycloalkyl; R 1 represents a substituted or unsubstituted alkyl or alkenyl; R 2 and R 3 represent alkyl, alkenyl, aryl, cycloalkyl, aralkyl, heteroalkyl, halogen, hydroxy, cyano, amino, acyl, alkoxyl, silyloxy, amino, nitro, thiol, amine, imine, amide, phosphonate, phosphine, carbonyl, carboxyl, silyl, ether, thioether, sulfonyl, selenoether, ketone, aldehyde, or ester; R 4 represents hydrogen, alkyl, alkenyl, aryl, cycloalkyl, aralkyl, heteroalkyl, halogen, hydroxy, cyano, amino, acyl, alkoxyl, silyloxy, amino, nitro, thiol, amine, imine, amide, phosphonate, phosphine, carbonyl, carboxyl, silyl, ether, thioether, sulfonyl, selenoether, ketone, aldehyde, or ester; R 5 represents H or lower alkyl; n is an integer from 0 to 6 inclusive; and m is an integer from 0 to 8 inclusive.