9-[(cyclopropylmethyl)(methyl)amino]-9a-hydroxy-5-methoxy-1,3a,8,9,9a,9b-hexahydrophenanthro[4,5-bcd]furan-3(2H)-one 在
三溴化硼 作用下,
以
二氯甲烷 为溶剂,
以19%的产率得到(3aR,9R,9aS,9bS)-9-[(cyclopropylmethyl)(methyl)amino]-5,9a-dihydroxy-1,3a,8,9,9a,9b-hexahydrophenanthro[4,5-bcd]furan-3(2H)-one