methyl (phenyl 2,3,4-tri-O-benzyl-1-thio-β-D-galactopyranosid)uronate 、
benzyl (2S,3R,4S,5R,6S)-3-hydroxy-4,5-bis(phenylmethoxy)-6-[(2S,3R,4S,5R,6R)-4,5,6-tris(phenylmethoxy)-2-phenylmethoxycarbonyloxan-3-yl]oxyoxane-2-carboxylate 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 、 4 A molecular sieve 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 4.0h,
生成 、 methyl (2S,3R,4S,5R,6S)-6-[(2S,3R,4S,5R,6S)-4,5-bis(phenylmethoxy)-2-phenylmethoxycarbonyl-6-[(2S,3R,4S,5R,6R)-4,5,6-tris(phenylmethoxy)-2-phenylmethoxycarbonyloxan-3-yl]oxyoxan-3-yl]oxy-3,4,5-tris(phenylmethoxy)oxane-2-carboxylate