Patent ID: 7655658

Claim:
A compound of the formula: or an enantiomer, stereoisomer or diastereoisomer thereof, or a pharmaceutically acceptable salt thereof, wherein R 1 is -L 1 -J; R 2 is -L 2 -W; R 3 is -L 3 -T; R 4 is -L 4 -Q; L 1 is a bond or a linker unit comprising from one to eight backbone atoms selected from the group consisting of carbon, sulfur, oxygen and nitrogen; J is a carbocyclic ring group comprising at least one aromatic ring; L 2 is —(CX) m —; W 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, two substituted or unsubstituted aromatic carbocyclic rings 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 include 5 or 6 ring atoms; L 3 and L 4 are —(CH 2 ) m —; T is —NH 2 , N(Z)(Z), —NH—C(=NH)—NH 2 or —N(Z)—C(=N(Z))—N(Z)(Z), where each Z is independently H or CH 3 ; Q is a carbocyclic ring group comprising at least one aromatic ring; X is at each occurrence independently H, H 2 , or a C 1 to C 12 linear or branched alkyl; and m is at each occurrence independently from 1 to 6.