Patent ID: 7026469

Claim:
A compound having the structure of Formula III: wherein, R 11 is (C 1 -C 16 ) alkyl, branched alkyl, alkenyl or alkynyl; R 12 is (C 8 -C 12 ) alkyl, branched alkyl, alkenyl or alkynyl; R 12′ is (C 1 -C 16 ) phenalkyl, or alkoxy or hydroxy, or anhydride, or ester with the proviso that when R 12′ is not hydroxy, it is optionally linked to R 12 through a linker moiety L and wherein R 12′ is optionally terminally substituted with a therapeutic agent, wherein L is —O—, —S—, —NH 2 —, or —NHC(O)—; X 11 is —O—, —S—, —NH 2 —, or —NHC(O)—; X 12 is —O; X 13 is —O—, —S—, —CH 2 —, anhydride, or (C 1 -C 16 ) alkoxy; n is 0, 1 or 2; R 13 —R 3 N(R 6 )(R 7 )R 8 ; R 3 is (C 1 -C 8 ) alkylene; and R 6 , R 7 and R 8 are each independently —H, (C 1 -C 8 ) alkyl or (C 1 -C 8 ) alkoxy; and pharmaceutically acceptable salts and prodrugs thereof.