Patent ID: 7834017

Claim:
A compound having the formula of structure I: or an enantiomer, stereoisomer or diastereoisomer thereof, or a pharmaceutically acceptable salt thereof, wherein one or two of R 1a , R 1b , R 2a , and R 2b are independently a C 1 to C 6 aliphatic linear or branched chain and the remaining of R 1a , R 1b , R 2a , and R 2b are hydrogen, provided that at least one of R 1a and R 1b and at least one of R 2a and R 2b are hydrogen; or one of R 1a , R 1b , R 2a , and R 2b are and the remaining of R 1a , R 1b , R 2a , and R 2b are hydrogen; or R 1a and R 1b together form ═O and one of R 2a and R 2b is a C 1 to C 6 aliphatic linear or branched chain, and the remaining of R 2a and R 2b is hydrogen; y is in each instance an independent index value from 0 to 5; W is a diamine heteroatom unit with at least one cationic center, hydrogen bond donor or hydrogen bond acceptor; L 2 is a bond or (CH 2 ) z ; z is an index value from 1 to 6; X is CH 2 , C═O or C═S; the groups —C(R 8 )(CH 2 ) v CH(R 9 )(CH 2 ) y -Q and —C(R 8 )(CH 2 ) v CH(R 9 )(CH 2 ) y -J are the same and, in those groups, R 8 is H or ═O; R 9 is hydrogen or N(R 10a )R 10b ; R 10a and R 10b are 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 2; and Q and J are the same and represent an aromatic carbocyclic ring selected from the group consisting of phenyl, substituted phenyl, naphthyl and substituted naphthyl; wherein the carbon atoms marked with an asterisk can have any stereochemical configuration.