在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
生成
2-{(2S,12bS)-3-[1-Ethoxy-eth-(Z)-ylidene]-1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizin-2-yl}-malonic acid dimethyl ester 、
2-[(2S,12bS)-3-Eth-(E)-ylidene-1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizin-2-yl]-malonic acid dimethyl ester 、 2-[(2S,12bS)-3-Eth-(E)-ylidene-1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizin-2-yl]-malonic acid dimethyl ester