Patent ID: 8309547

Claim:
A compound of Formula 13: wherein G 1 is OR 1 , NR 2 R 3 or CQ 3 ; R 1 is alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl or substituted arylalkyl; R 2 and R 3 are either (a) two independent groups or (b) together form a single ring group with the N to which they are bonded; R 2 and R 3 , when independent groups, are independently selected from the group consisting of: H, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl and substituted arylalkyl; R 2 and R 3 , when together form a single ring group with the N to which they are bonded, are a heteroaryl ring; Q is halogen; and G 2 is a primary amine precursor.