Patent ID: 7632955

Claim:
A compound of the following formula: wherein L 1 is a bond; L 2 is C(O); R 1 is H, alkynyl, aryl, heteroaryl, cyclyl, heterocyclyl, halogen, nitro, cyano, NRR′, NRC(O)R′, C(O)OR, C(O)NRR′, or C(O)R′″; R 2 is 3,4,5-trimethoxylphenyl; each of R a , R c , and R d , independently, is H, unsubstituted alkyl, alkenyl, alkynyl, aryl, heteroaryl, cyclyl, heterocyclyl, halogen, nitro, nitroso, cyano, azide, isothionitro, OR, OC(O)R, OC(O)OR, OC(O)NRR′, SO 2 R, SO 3 R, SO 2 NRR′, SR, NRR′, NRSO 2 NR′R″, NRSO 2 R′, NRSO 3 R′, NRC(O)R′, NRC(O)NR′R″, NRC(O)OR′, NRC(N)NR′R″, C(O)R, C(O)OR, C(O)NRR′, or R b and R c , R a and R b , or R c and R d taken together are O(CH 2 ) n O; and R b is unsubstituted alkyl, alkenyl, alkynyl, halogen, OR, NRR′; R c is H, alkyl, alkenyl, alkynyl, cyclyl, heterocyclyl, heteroaryl, halogen, nitro, nitroso, cyano, azide, isothionitro, OR, OC(O)R, OC(O)OR, OC(O)NRR′, SO 2 R, SO 3 R, SO 2 NRR′, SR, NRR′, NRSO 2 NR′R″, NRSO 2 R′, NRSO 3 R′, NRC(O)R′, NRC(O)NR′R″, NRC(O)OR′, NRC(N)NR′R″, C(O)R, C(O)OR, or C(O)NRR′; in which each of R, R′, and R″ independently, is H, alkyl, alkenyl, alkynyl, aryl, heteroaryl, cyclyl, or heterocyclyl; R′″is substituted aryl or substituted heteroaryl; and n is 1, 2, 3, 4, or 5.