Patent ID: 7064211

Claim:
An intermediate having the structure: wherein g is 2; L is CR L1 R L2 , wherein each occurrence of R L1 , R L2 and R L3 is independently hydrogen or an aliphatic, alicyclc, heteroaliphatic, heteroalicyclic, aryl or heteroaryl moiety; each occurrence of R G1 , R M1 and R M2 is each independently hydrogen or an aliphatic, alicyclic or aryl moiety; and wherein any two adjacent R L1 , R L2 , R L3 , R G1 , R M1 or R M2 groups, taken together, form a R 2 is hydrogen or an aliphatic, alicyclic or aryl moiety; and R 6 is hydrogen or an aliphatic, alicycluc or aryl moiety.