[1-(Tert-butoxycarbonylamino-methyl)-6,7-dimethoxy-isoquinolin-4-yl]-acetic acid   、                                                                                      
四氢异喹啉                                                                                                                                                                                                                                                                                                          以to give 94 mg of {4-[2-(3,4-dihydro-1H-isoquinolin-2-yl)-2-oxo-ethyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester的产率得到{4-[2-(3,4-dihydro-1H-isoquinolin-2-yl)-2-oxo-ethyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester