[1-(Tert-butoxycarbonylamino-methyl)-6,7-dimethoxy-isoquinolin-4-yl]-acetic acid   、                                                                                      
2-甲氧基乙胺                                                                                                                                                                                                                                                                                                          以to give 40 mg of {6,7-dimethoxy-4-[(2-methoxy-ethylcarbamoyl)-methyl]-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester的产率得到{6,7-dimethoxy-4-[(2-methoxy-ethylcarbamoyl)-methyl]-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester