4-O-acetyl-3-O-tert-butyldimethylsilyl-2-thiophenyl-6-O-tosyl-β-D-glycopyranosyl-(1→4)-α-L-rhodinopyranosyl-(1→4)-2,3-di-O-benzoyl-1-O-benzyl-α-L-rhamnopyranoside 在
碳酸氢钠 、 lithium iodide 作用下,
以
四氢呋喃 为溶剂,
以84%的产率得到(2R,3R,4R,5S,6S)-5-(((2S,5S,6S)-5-(((2R,3R,4S,5R,6S)-5-acetoxy-4-((tert-butyldimethylsilyl)oxy)-6-(iodomethyl)-3-(phenylthio)tetrahydro-2H-pyran-2-yl)oxy)-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2-(benzyloxy)-6-methyltetrahydro-2H-pyran-3,4-diyl dibenzoate