Patent ID: 7189755

Claim:
A compound having the structure: or a stereoisomer or pharmaceutically acceptable salt thereof, wherein J is a ring structure selected from the group consisting of substituted or unsubstituted aromatic carbocyclic rings, substituted or unsubstituted non-aromatic carbocyclic rings, substituted or unsubstituted aromatic fused carbobicyclic ring groups, substituted or unsubstituted aromatic carbocyclic ring groups wherein the rings are joined by a bond or —O—, and substituted or unsubstituted aromatic fused heterobicyclic ring groups; wherein in each instance the rings comprise 5 or 6 ring atoms; W is a heteroatom unit with at least one cationic center, hydrogen bond donor or hydrogen bond acceptor wherein at least one atom is N; Q is an aromatic carbocyclic ring selected from the group consisting of phenyl, substituted phenyl, naphthyl and substituted naphthyl; R 4 is —R 5 or —R 5 —R 6 ; R 5 is from one to three amino acid residues or an amine capping group, provided that if R 6 is present, R 5 is at least one amino acid residue; R 6 is H or an amine capping group; and y is at each occurrence independently from 0 to 6; wherein the carbon atom marked with an asterisk can have any stereochemical configuration.