(3bR,9bS)-7-isopropyl-6-methoxy-9b-methyl-3b,4,10,11-tetrahydrophenanthro[2,1-c]furan-3,5(1H,9bH)-dione 在
三溴化硼 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以96.5%的产率得到(3bR,9bS)-6-hydroxy-7-isopropyl-9b-methyl-3b,4,10,11-tetrahydrophenanthro[2,1-c]furan-3,5(1H,9bH)-dione