(1S,2R,4S,6R)-6-[(3aR,4S,6aR,8S,10aR)-8-acetyloxy-4-methyl-3,5-dioxo-1,3a,6,6a,7,8,9,10-octahydrobenzo[d][2]benzofuran-4-yl]-5-oxobicyclo[2.2.1]heptane-2-carboxylic acid 、
碘甲烷 在
caesium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
生成 methyl (1S,2R,4S,6R)-6-[(3aR,4S,6aR,8S,10aR)-8-acetyloxy-4-methyl-3,5-dioxo-1,3a,6,6a,7,8,9,10-octahydrobenzo[d][2]benzofuran-4-yl]-5-oxobicyclo[2.2.1]heptane-2-carboxylate