Patent ID: 7449474

Claim:
A compound, or an enantiomeric or a diastereomeric form, or salt thereof, said compound having the formula: wherein R is substituted or unsubstituted C 1 -C 10 linear or branched alkyl; R 1 has the formula: -(L) x —R 3 R 3 is a unit selected from the group consisting of: i) substituted or unsubstituted C 3 -C 10 carbocyclic; ii) substituted or unsubstituted C 6 -C 10 aryl; iii) substituted or unsubstituted C 1 -C 10 heterocyclic; and iv) substituted or unsubstituted C 1 -C 10 heteroaryl; R 2 has the formula -(L 1 ) y—R 4 R 4 is a unit selected from the group consisting of: i) hydrogen; ii) substituted or unsubstituted C 1 -C 10 linear or branched hydrocarbyl; iii) substituted or unsubstituted C 3 -C 10 carbocyclic; iv) substituted or unsubstituted C 6 -C 10 aryl; v) substituted or unsubstituted C 1 -C 10 heterocyclic; and vi) substituted or unsubstituted C 1 -C 10 heteroaryl; L and L 1 are linking groups each of which are independently selected from the group consisting of: i) —C(R 5 ) 2 —; ii) —NR 5 —; and iii) —O—; each R 5 is hydrogen, C 1 -C 4 linear or branched alkyl; or two R 5 units can be taken together to form a carbonyl unit; the indices x and y are each independently 0 or 1.