1-(tert-butoxycarbonylamino-methyl)-6,7-dimethoxy-isoquinoline-4-carboxylic acid 、
4-甲氧基苄胺 以to give 84 mgs (79%) of [6,7-Dimethoxy-4-(4-methoxy-benzylcarbamoyl)-isoquinolin-1-ylmethyl]-carbamic acid tert-butyl ester的产率得到[6,7-dimethoxy-4-(4-methoxy-benzylcarbamoyl)-isoquinolin-1-ylmethyl]-carbamic acid tert-butyl ester