地不容碱 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
生成
(2R,4aS,11bS)-3,4-dimethoxy-14-methyl-1,2,5,6-tetrahydro-4a,11b-(epiminoethano)phenanthro[2,3-d][1,3]dioxol-2-ol 、 (2R,4aS,11bS)-3,4-dimethoxy-14-methyl-1,2,5,6-tetrahydro-4a,11b-(epiminoethano)phenanthro[2,3-d][1,3]dioxol-2-ol