Patent ID: 7041829

Claim:
A compound of the formula: wherein: R 1 , R 2 and R 5 are independently selected from the group consisting of H and C 1 –C 2 alkyl; R 3 and R 4 are selected from C 2 –C 8 alkyl; R 6 is the L-isomer (amino acid convention) of R 7 —(CH 2 ) n —HC(NH 2 )—CO—; wherein n is an integer from 0 to 3; R 7 is selected from the group consisting of unsubstituted heteroaryl and monosubstituted heteroaryl, wherein said heteroaryl is selected from the group consisting of quinolinyl and isoquinolinyl, and said substituent is hydroxy, halo, amino, nitro, methyl or acetoxy; X is independently selected in each instance from the group consisting of trans, trans >C═CH—HC═C<, trans >C═C<, and >C*H—(CH 2 ) m —HC*<, where “*” indicates a chiral carbon atom and R 3 and R 4 are oriented L- and D-(amino acid convention) at these respective chiral centers; and m=0, 1 or 2, or a pharmaceutically acceptable salt, solvate or prodrug thereof.