Patent ID: 7022722

Claim:
A composition comprising a carrier and a compound of Formula I Formula I wherein: A is NH and B is sulfur; D 1 –D 6 are C; E can be attached to one or more of the atoms located at D 2 , D 3 , D 5 or D 6 ; P and Q are a double bond; and E can be the same or different and is a moiety selected from the group consisting of H, C 1-10 alkyl, and substituted alkyl groups; X is a substituted carboxylic group comprising —N—(C) 1-3 —C(O)O— that is attached to D 1 ; or salts of the compound of Formula I; or A is NH and B is sulfur; D 1 –D 6 are C; E can be attached to one or more of the atoms located at D 2 , D 3 , D 5 or D 6 ; P and Q are hydrogen; and E is hydrogen; X is a substituted carboxylic group comprising —N—(C) 1-3 —C(O)O— that is attached to D 1 ; or salts of the compound of Formula I.