[(2S)-1-[tert-butyl(dimethyl)silyl]oxy-4-[(2R,3S)-3-[(1S)-1-[tert-butyl(dimethyl)silyl]oxy-2-methylidenehex-4-ynyl]oxiran-2-yl]pent-4-en-2-yl] hex-4-ynoate 在
C
45H
48O
3W 作用下,
以
甲苯 为溶剂,
反应 4.0h,
以50%的产率得到(1R,4S,13S,14S)-13-[tert-butyl(dimethyl)silyl]oxy-4-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,12-dimethylidene-5,15-dioxabicyclo[12.1.0]pentadec-9-yn-6-one