[1-(Tert-butoxycarbonylamino-methyl)-6,7-dimethoxy-isoquinolin-4-yl]-acetic acid 、
N-甲基苄胺 以to give 69 mg of {4-[(benzyl-methyl-carbamoyl)-methyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester的产率得到{4-[(benzyl-methyl-carbamoyl)-methyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester