Patent ID: 8476451

Claim:
A compound of the formula which is selected from: wherein R 1 is a nitrogen containing moiety selected from an azide, a hydrazide and a hydrazone; R 2 is selected from H, substituted alkyl and substituted or unsubstituted heteroalkyl; R 3 is selected from H, acyl, substituted or unsubstituted alkyl, and substituted or unsubstituted heteroalkyl; R 6 is a member selected from H, substituted or unsubstituted alkyl and substituted or unsubstituted heteroalkyl; R 6a , R 7a and R 8 are independently selected from H, substituted or unsubstituted alkyl and substituted or unsubstituted heteroalkyl; and Y is a member selected from (CH 2 ) n COOR 4a , (CH 2 ) n OR 4 ; and (CH 2 ) n NR 4 R 5 wherein n is an integer from 0 to 10; R 4a is selected from H, substituted or unsubstituted alkyl and substituted or unsubstituted heteroalkyl; and R 4 and R 5 are independently selected from H, substituted or unsubstituted alkyl and substituted or unsubstituted heteroalkyl; or a pharmaceutically acceptable salt or prodrug thereof.