dimethyl (1S,2R,4aR,4bS,7S,9aS,10S,10aS)-7-acetoxy-2-hydroxy-1,4a-dimethyl-8-methylenedodecahydro-1H-7,9a-methanobenzo[a]azulene-1,10-dicarboxylate 在
三氯氧磷 作用下,
以
吡啶 为溶剂,
反应 3.0h,
生成 dimethyl (1R,4aR,4bS,7S,9aS,10S,10aS)-7-acetoxy-1,4a-dimethyl-8-methylene-4,4a,4b,5,6,7,8,9,10,10a-decahydro-1H-7,9a-methanobenzo[a]azulene-1,10-dicarboxylate