tert-butyl 2-[4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl]propan-2-ylcarbamate 、
三溴化硼 以to afford the desired product (9.7 mg, 97%) as an off-white solid的产率得到9-[4-(2-aminopropan-2-yl)phenyl]-6-chloro-8-hydroxythieno[2,3-c]quinolin-4(5H)-one hydrochloride