4-O-acetyl-1,5-anhydro-1,2,6-trideoxy-3-C-methyl-L-arabino-hex-1-enitol 在
N-碘代丁二酰亚胺 、
三氟甲磺酸三甲基硅酯 、
二异丁基氢化铝 、
三乙胺 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
反应 9.0h,
生成
(2R,3R,4S,5R,6S)-5-acetoxy-6-((2S,3S,4R,5R,6R)-6-(benzyloxy)-4-(tertbutyldimethylsilyloxy)-5-iodo-2,4-dimethyltetrahydro-2H-pyran-3-yloxy)-4-methoxy-2-methyltetrahydro-2H-pyran-3-yl benzoate 、 (2R,3R,4S,5R,6R)-5-acetoxy-6-((2S,3S,4R,5R,6R)-6-(benzyloxy)-4-(tertbutyldimethylsilyloxy)-5-iodo-2,4-dimethyltetrahydro-2H-pyran-3-yloxy)-4-methoxy-2-methyltetrahydro-2H-pyran-3-yl benzoate