Patent ID: 8022157

Claim:
A compound of Formula I: wherein: R 1 is hydrogen or methyl; R 2 is alkyl substituted with an oxo and halo group; X is selected from the group consisting of nitro, —N(R 3 ) 3 + , trifluoromethyl, cyano, —C(O)OR 3 , —C(O)R 3 , where R 3 is hydrogen or alkyl; and L 1 and L 2 are independently selected from the group consisting of a direct bond, methylene optionally substituted with 1-2 R 4 groups, (C 2 -C 12 )alkylene optionally substituted with 1-4 R 4 groups, (C 6 -C 12 )arylene optionally substituted with 1-4 R 4 groups, (C 3 -C 12 )cycloalkylene optionally substituted with 1-4 R 4 groups, (C 3 -C 12 )heterocycloalkylene optionally substituted with 1-4 R 4 groups, and (C 6 -C 12 )heteroarylene optionally substituted with 1-4 R 4 groups; and R 4 is selected from the group consisting of halo, nitro, cyano, oxo, aminoacyl, aminoacyloxy, carboxyl, carboxyl ester, carbonate ester, aminosulfonyl, (C 1 -C 10 )alkyl, (C 1 -C 10 )haloalkyl, (C 1 -C 10 )alkoxy, (C 6 -C 12 )aryl, (C 5 -C 12 )heteroaryl, (C 6 -C 12 )aryloxy, (C 3 -C 12 )cycloalkyl and (C 3 -C 12 )heterocycloalkyl.