(1S*,2R*,3R*,5S*,6S*)-2-acetoxy-5-methyl-3-(4-methyl-2,6,7-trioxabicyclo<2.2.2>oct-1-yl)-7-oxabicyclo<4.1.0>heptane 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 1.5h,
以88%的产率得到(1S
*,2R
*,3R
*,5S
*,6S
*)-2-hydroxy-5-methyl-3-(4-methyl-2,6,7-trioxabicyclo<2.2.2>oct-1-yl)-7-oxabicyclo<4.1.0>heptane