(4R,6S)-6-(tert-Butyl-dimethyl-silanyloxy)-1-{(4S,6R)-6-[(E)-(3S,4S)-4-(4-methoxy-benzyloxy)-3,5-dimethyl-hex-1-enyl]-2,2-dimethyl-[1,3]dioxan-4-yl}-8-trimethylsilanyl-octa-1,7-diyn-4-ol 在
4-二甲氨基吡啶 、
三正丁基氢锡 、
三乙胺 作用下,
以
正己烷 、
二氯甲烷 为溶剂,
生成 (S)-4-[(S)-2-(tert-Butyl-dimethyl-silanyloxy)-4-trimethylsilanyl-but-3-ynyl]-6-[(1R,5S)-7-((2S,3S)-3-hydroxy-2,4-dimethyl-pentyl)-3,3-dimethyl-2,4-dioxa-bicyclo[3.2.1]oct-(6Z)-ylidene]-[1,3]dioxan-2-one