tert-butyl 1-(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 (28 mg, 66%) as a white solid的产率得到9-(4-(2-aminopropyl)phenyl)-6-chloro-8-hydroxythieno[2,3-c]quinolin-4(5H)-one hydrochloride