2,3,3aβ,4,4aβ,5,6,7,8,8a,9,9aβ-dodecahydro-8aβ-methyl-2,5-dioxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 16.0h,
生成 2,3,3aβ,4,4aα,5,6,7,8,8a,9,9aβ-dodecahydro-8aβ-methyl-2,5-dioxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester