(2S,3S,4aR,8aR)-7-(((tert-butyldimethylsilyl)oxy)methyl)-2,3-dimethoxy-2,3-dimethyl-2,3,4a,8a-tetrahydrobenzo[b][1,4]dioxin-6(5H)-one 、
trimethylsulphoxonium iodide 在
sodium hydride 作用下,
以
二甲基亚砜 为溶剂,
反应 48.0h,
以49%的产率得到(1R,2R,4S,7R,9S,10S)-4-[[tert-butyl(dimethyl)silyl]oxymethyl]-9,10-dimethoxy-9,10-dimethyl-8,11-dioxatricyclo[5.4.0.02,4]undecan-5-one