Patent ID: 7157092

Claim:
A N-acyl dipeptidic compound of the formula wherein R 1 and R 2 are each an acyl moiety of a saturated or unsaturated carboxylic acid of 2 to 24 carbon atoms unsubstituted or substituted with at least one member selected from the group consisting of hydroxyl, alkyl and alkoxy of 1 to 24 carbon atoms, amino, acyloxy of an organic carboxylic acid of 1 to 24 carbon atoms and acylamino and acylthio of a carboxylic acid of 1 to 24 carbon atoms and alkylthio of 1 to 24 carbon atoms, m, p and q are integers from 1 to 10, n is an integer from 0 to 10, X and Y are independently hydrogen or an acid group selected from the group consisting of carboxy [(C 1-5 )alkyl] CH—[(CH 2 ) m1 COOH][(CH 2 ) n1 COOH] with m 1 =0 to 5 and n 1 =0 to 5 phosphono [(C 1-5 )alkyl] dihydroxyphosphonyloxy[(C 1-5 )alkyl] dimethoxyphosphonyl phosphono hydroxysulfonyl hydroxysulfonyl [(C 1-5 )alkyl] and hydroxysulfonyloxy [(C 1-5 )alkyl] in neutral or charged form provided that at least one of the substituents X and Y is other than hydrogen and A and B are individually selected from the group consisting of oxygen, sulfur and —NH—.