Patent ID: 7834010

Claim:
A compound represented by formula IV-P wherein L is absent or selected from the group consisting of straight chain or branched optionally substituted C 1-10 -alkyl, optionally substituted C 2-10 -alkenyl, optionally substituted C 2-10 -alkynyl, C 1-10 -alkylamine, C 1-10 -alkoxy, C 2-10 -alkenyloxy, C 2-10 -alkynyloxy, C 1-10 -alkoxycarbonyl, C 2-10 -alkenyloxycarbonyl, C 2-10 -alkynyloxycarbonyl; and A is selected from the group consisting of —C(O)—OR 1 , —OP(O)OR 2 OR 2 , —P(O)OR 2 OR 2 , —SOhd 2 OR 2 , and PO 3 H; wherein R 1 and R 2 are independently selected from the group consisting of H, a counter-ion M, C 1-15 -alkyl, C 3-8 -cycloalkyl, aryl, and R 1,2 wherein R 1,2 is R′—O—C(O)—R″, R′—C(O)—O—R″, R′—C(O)—O—R″, wherein R′ and R″ are independently selected from the group consisting of C 1-15 -alkyl, C 3-8 -cycloalkyl and aryl; R 13 is selected from the group consisting of H, halogen, NH 2 , and C 1-6 -alkyl; and R 16 is selected from the group consisting of H, halogen, OH, O—C 1-6 -alkyl, and C 1-6 -alkyl.