(5S,9S)-(-)-Methyl-5,9-epoxy-5,6,9,10-tetrahydro-8-hydroxy-2,3-dimethoxy-5-methyl-benzocycloocten-7-carboxylat 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以16%的产率得到(5S,7R,8S,9S)-(-)-methyl 5,9-epoxy-5,6,7,8,9,10-hexahydro-8-hydroxy-2,3-dimethoxy-5-methyl-benzocyclooctene-7-carboxylate