methyl [(2S,3R,4S,5S,6R)-5-hydroxy-2-methoxy-3-phenylmethoxy-6-(phenylmethoxymethyl)oxan-4-yl]methanesulfonate 、 phenyl 2,3-di-O-acetyl-4,6-O-(4-methoxybenzylidene)-1-thio-β-D-glucopyranoside 在
N-碘代丁二酰亚胺 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以68%的产率得到methyl (2,3-di-O-acetyl-4,6-O-(4-methoxybenzylidene)-β-D-glucopyranosyl)-(1->4)-2,6-di-O-benzyl-3-deoxy-3-C-(methyl sulfonatomethyl)-α-D-glucopyranoside