(3R,4aS)-3,10-Dihydroxy-7-isopropyl-5,6-dimethoxy-1,1,4a-trimethyl-2,3,4,4a-tetrahydro-1H-phenanthren-9-one 在
potassium tert-butylate 作用下,
以
叔丁醇 为溶剂,
反应 22.0h,
生成 (2S,4aR,10bR)-2,4a-Dihydroxy-8-isopropyl-9,10-dimethoxy-4,4,10b-trimethyl-1,2,3,4,4a,10b-hexahydro-benzo[c]chromen-6-one 、 (2S,4aS,10bR)-2,4a-Dihydroxy-8-isopropyl-9,10-dimethoxy-4,4,10b-trimethyl-1,2,3,4,4a,10b-hexahydro-benzo[c]chromen-6-one