(2R,4aR,6S,7R,8R,8aR)-7-hydroxy-2-(4-methoxyphenyl)-6-(((3aS,4R,6R,7R,7aS)-2,2,4-trimethyl-6-(((S)-non-1-en-4-yl)oxy)tetrahydro-4H-[1,3]dioxolo[4,5-c]pyran-7-yl)oxy)hexahydropyrano[3,2-d][1,3]dioxin-8-yl (E)-2-methylbut-2-enoate 、
叔丁基二甲硅基三氟甲磺酸酯 在
2,6-二甲基吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以93%的产率得到[(2R,4aR,6S,7R,8S,8aR)-6-[[(3aS,4R,6R,7R,7aS)-2,2,4-trimethyl-6-[(4S)-non-1-en-4-yl]oxy-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl]oxy]-7-[tert-butyl(dimethyl)silyl]oxy-2-(4-methoxyphenyl)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] (E)-2-methylbut-2-enoate