甲磺酸甲酯 、
3-[6,7-Dimethoxy-1-(3,4,5-trimethoxy-benzyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid 2-{3-[6,7-dimethoxy-1-(3,4,5-trimethoxy-benzyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionyloxy}-ethyl ester; compound with oxalic acid 以
乙腈 为溶剂,
反应 48.0h,
以81%的产率得到mono(2,2'-((ethane-1,2-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(6,7-dimethoxy-2-methyl-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinolin-2-ium)) monomethanesulfonate