Patent ID: 7399863

Claim:
A compound of formula (I): wherein: each of R 1 , R 2 , R 3 , and R 4 is independently selected from hydrogen, amino, halo, hydroxy, —CH 2 OH and —NHCHO, or R 1 and R 2 taken together are —NHC(═O)CH═CH—, or —CH═CHC(═O)NH—; each of R 5 and R 6 is independently hydrogen or C 1-3 alkyl; each of R 7 and R 8 is independently hydrogen or C 1-6 alkyl; each of R 9 , R 10 , and R 11 is independently selected from hydrogen, halo and —OR a ; and R a is hydrogen or C 1-3 alkyl; or a pharmaceutically-acceptable salt or stereoisomer thereof.