(2S,4R,6R)-6-Allyl-4-(tert-butyl-dimethyl-silanyloxy)-5,5-dimethyl-tetrahydro-pyran-2-carbonitrile 生成 (2S,4R,6R)-4-(tert-Butyl-dimethyl-silanyloxy)-6-((S)-2,3-dihydroxy-propyl)-5,5-dimethyl-tetrahydro-pyran-2-carbonitrile 、 (2S,4R,6R)-4-(tert-Butyl-dimethyl-silanyloxy)-6-((R)-2,3-dihydroxy-propyl)-5,5-dimethyl-tetrahydro-pyran-2-carbonitrile