tert-butyl (1-(4-(8-methoxy-6-methyl-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)cyclobutyl)methylcarbamate 、
三溴化硼 、
二氯甲烷 以1.9 mL, 1.9 mmol to afford the desired product (82 mg, 65%) as a white solid的产率得到9-(4-(1-(aminomethyl)cyclobutyl)phenyl)-8-hydroxy-6-methylthieno[2,3-c]quinolin-4(5H)-one hydrochloride