(+/-)-1-ethyl-1-(2',2'-diethoxycarbonylethyl)-1,2,3,4,6,7-hexahydro-12H-indolo<2,3-a>quinolizin-5-iumperchlorate 在
palladium on activated charcoal
氢气 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以85%的产率得到2-((1S,12bS)-1-Ethyl-1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizin-1-ylmethyl)-malonic acid diethyl ester; hydrochloride