(S)-tert-butyl 1-(4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)ethyl(methyl)carbamate 、
三溴化硼 以to afford the desired product (18 mg, 60%) as a white solid的产率得到(S)-6-chloro-8-hydroxy-9-(4-(1-(methylamino)ethyl)phenyl)thieno[2,3-c]quinolin-4(5H)-one hydrochloride