Patent ID: 7727991

Claim:
A compound of formula I: or an enantiomer, stereoisomer or diastereoisomer thereof, or a pharmaceutically acceptable salt thereof, wherein J is selected from the group consisting of a substituted or unsubstituted aromatic carbocyclic ring and two substituted or unsubstituted aromatic carbocyclic rings wherein the two rings are joined by a bond, —CH 2 — or —O—, wherein in each instance each ring contains 5 or 6 ring atoms; W is —NH—C(NH)—NH 2 or —NH 2 , wherein any NH or NH 2 may be replaced by N-Prg or NH-Prg, respectively, where each Prg is independently an amine protecting group; Q is an aromatic carbocyclic ring selected from the group consisting of phenyl, substituted phenyl, naphthyl and substituted naphthyl; L is a C 1 to C 3 alkyl or a group of the formula wherein R 1 is one or two of R 2a , R 2b , R 3a , and R 3b are independently a C 1 to C 6 aliphatic linear or branched chain and the remaining of R 2a , R 2b , R 3a , and R 3b are hydrogen, provided that at least one of R 2a and R 2b and at least one of R 3a and R 3b are hydrogen; R 4a and R 4b are each independently hydrogen, acetyl, methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, isobutyl, benzyl, benzoyl, hexanoyl, propionyl, butanoyl, pentanoyl, heptanoyl, cyclopropyl, cyclopropylmethyl, cyclobutyl, cyclobutylmethyl, cyclohexyl, cyclohexylmethyl, or polyethylene glycol; v is an index value from 0 to 5; x is an index value from 0 to 6; y is an index value from 0 to 4; and r is an index value from 0 to 4; wherein the carbon atoms marked with an asterisk can have any stereochemical configuration.