N-[(2R,3S,4S,5R,6S)-4-hydroxy-6-methoxy-2-methyl-5-[(2S,3R,4S,5R,6R)-3,4,5-tribenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]oxyoxan-3-yl]-1-(4-methoxyphenyl)methanimine oxide 、
2,3,4,6-四乙酰氧基-alpha-D-吡喃葡萄糖溴化物 在
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以80%的产率得到[(2R,3R,4S,5R,6S)-6-[[(3aR,4R,6S,7R,7aS)-6-methoxy-2-(4-methoxyphenyl)-4-methyl-3-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-2,3a,4,6,7,7a-hexahydropyrano[3,4-d][1,3]oxazol-7-yl]oxy]-3,4,5-tribenzoyloxyoxan-2-yl]methyl benzoate