(2S,3S,5Z,8S,9R)-9-[[tert-butyl(diphenyl)silyl]oxymethyl]-2-(1-hydroxyprop-2-enyl)-8-phenylmethoxy-2,3,4,7,8,9-hexahydrooxonin-3-ol 、
2-phenylselenoacetaldehyde diethylacetal 在
4-甲基苯磺酸吡啶 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以91%的产率得到[(4aS,6R,7S,9Z,11aS)-4-ethenyl-7-phenylmethoxy-2-(phenylselanylmethyl)-4a,6,7,8,11,11a-hexahydro-4H-[1,3]dioxino[5,4-b]oxonin-6-yl]methoxy-tert-butyl-diphenylsilane