(R)-叔-丁基-N-丁酸酯去甲劳丹素草酸酯 在
trimethoxonium tetrafluoroborate 作用下,
以
二氯甲烷 为溶剂,
反应 17.5h,
生成 (1R-trans)-1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-2-carboxyethyl-isoquinolinium tetrafluoroborate 、 (1R-cis)-1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-2-carboxyethyl-isoquinolinium tetrafluoroborate