苯基-3,4,6-三-O-乙酰基-2-脱氧-1-硫代-2-(2,2,2-三氯乙氧基甲酰氨基)-β-D-吡喃半乳糖苷 、 (2S,4S,5R,6R)-4-Acetoxy-5-acetylamino-2-[(2S,3R,4S,5S,6R)-3-benzyloxy-6-benzyloxymethyl-5-hydroxy-2-(4-methoxy-phenoxy)-tetrahydro-pyran-4-yloxy]-6-((1S,2R)-1,2,3-triacetoxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以73%的产率得到methyl (2S,4S,5R,6R)-5-acetamido-4-acetyloxy-2-[(2S,3R,4S,5S,6R)-5-[(2S,3R,4R,5R,6R)-4,5-diacetyloxy-6-(acetyloxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-2-(4-methoxyphenoxy)-3-phenylmethoxy-6-(phenylmethoxymethyl)oxan-4-yl]oxy-6-[(1S,2R)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate