Phenylmethoxymethylselanylbenzene 、 methyl (2S,4S,5R,6R)-5-acetamido-2-[(2R,3S,4S,5R,6R)-3-[(2S,3R,4R,5R,6R)-3-acetamido-5-acetyloxy-6-(acetyloxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-5-benzoyloxy-2-(benzoyloxymethyl)-6-(2,2,2-trichloroethanimidoyl)oxyoxan-4-yl]oxy-4-acetyloxy-6-[(1S,2R)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以92%的产率得到methyl (2S,4S,5R,6R)-5-acetamido-2-[(2R,3S,4S,5R,6S)-3-[(2S,3R,4R,5R,6R)-3-acetamido-5-acetyloxy-6-(acetyloxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-5-benzoyloxy-2-(benzoyloxymethyl)-6-phenylselanyloxan-4-yl]oxy-4-acetyloxy-6-[(1S,2R)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate