Patent ID: 7132568

Claim:
An isolated compound having the structure: or pharmaceutically acceptable derivative thereof; wherein R 0 is hydrogen, an aliphatic, heteroaliphatic or aromatic moiety, a nitrogen protecting group, or a prodrug moiety; R′ is hydrogen or an aliphatic, heteroaliphatic or aromatic moiety, R 1 is an aliphatic, heteroaliphatic or aromatic moiety; R 2 is an aliphatic, heteroaliphatic or aromatic moiety; R 3 is hydrogen, halogen, or an aliphatic, heteroaliphatic or aromatic moiety; R 4 is an aliphatic, heteroaliphatic, heteroaliphatic or aromatic moiety; and R X2A is hydrogen or an aliphatic, heteroaliphatic or aromatic moiety; wherein each of the foregoing aliphatic moieties may be independently substituted or unsubstituted, linear or branched, cyclic or acyclic, each of the foregoing heteroaliphatic moieties may be independently substituted or unsubstituted, linear or branched, and each of the foregoing aromatic moieties may be substituted or unsubstituted.