1-ethoxycarbonylmethyl-4-(2-indol-2-yl-[1,3]dioxolan-2-yl)-pyridinium; bromide 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
生成
[1',4',5',7'-tetrahydro-3'H-spiro[[1,3]dioxolane-2,6'-(1,5-methano-azocino[4,3-b]indol)]-2'-yl]-acetic acid ethyl ester