2,3-Dimethoxy-7-methyl-8-oxo-5,7,8,9-tetrahydro-6H-9-aza-6a-azonia-benzo[6,7]cyclohepta[1,2-a]naphthalene; bromide 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
生成 (7R,13bS)-2,3-Dimethoxy-7-methyl-5,6,9,13b-tetrahydro-6a,9-diaza-benzo[6,7]cyclohepta[1,2-a]naphthalen-8-one 、 (7S,13bS)-2,3-Dimethoxy-7-methyl-5,6,9,13b-tetrahydro-6a,9-diaza-benzo[6,7]cyclohepta[1,2-a]naphthalen-8-one