Patent ID: 7452993

Claim:
A compound having the formula: wherein L 1 and L 2 are independently a bond, —S(O) n —, —O—, —NH—, unsubstituted C 1 -C 5 alkylene, or unsubstituted 2 to 5 membered heteroalkylene, wherein n is an integer from 0 to 2, and R 1 and R 2 are independently substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted aryl, with the proviso that R 1 is not substituted or unsubstituted pyrrolyl, and that L 1 is not unsubstituted 2 to 5 membered heteroalkylene when R 1 and R 2 are both unsubstituted phenyl, and that L 1 is not —S(O) 2 — when R 2 is unsubstituted piperazinyl, and that R 1 is not substituted or unsubstituted isoxazolyl when R 2 is unsubstituted pyridinyl.