[1-(Tert-butoxycarbonylamino-methyl)-6,7-dimethoxy-isoquinolin-4-yl]-acetic acid 、
4-苄基哌啶 以to give 132 mg of {-4-[2-(4-benzyl-piperidin-1-yl)-2-oxo-ethyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester的产率得到{-4-[2-(4-benzyl-piperidin-1-yl)-2-oxo-ethyl]-6,7-dimethoxy-isoquinolin-1-ylmethyl}-carbamic acid tert-butyl ester