(2S,12bS)-2-((S)-3-Hydroxy-1-hydroxymethyl-propyl)-1,2,6,7,12,12b-hexahydro-indolo[2,3-a]quinolizine-3-carboxylic acid methyl ester 在
sodium cyanoborohydride 作用下,
以
溶剂黄146 为溶剂,
以68%的产率得到(7aS,11S,11aS,12aS)-11-(2-Hydroxy-ethyl)-5,6,7,7a,10,11,11a,12,12a,13-decahydro-9-oxa-6a,13-diaza-indeno[2,1-a]anthracen-8-one