[(1S)-1-[(2S,3S,4aR,8aS)-3-[tert-butyl(dimethyl)silyl]oxy-2,3,4,4a,6,7,8,8a-octahydropyrano[3,2-b]pyran-2-yl]ethyl] methanesulfonate 、
三甲基铝 以
正己烷 为溶剂,
以95%的产率得到[(2R,3S,4aR,8aS)-2-ethyl-2-methyl-4,4a,6,7,8,8a-hexahydro-3H-pyrano[3,2-b]pyran-3-yl]oxy-tert-butyl-dimethylsilane