三氟甲磺酸酐 、
benzyl 3-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-β-D-mannopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-β-D-mannopyranoside 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.58h,
生成 [(2R,3R,4S,5S,6R)-3-[(2S,3S,4S,5R,6R)-5-[[(2R,4aR,6S,7R,8S,8aR)-8-benzoyloxy-2-phenyl-7-(trifluoromethylsulfonyloxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-3,4-dibenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]oxy-4,5-dibenzoyloxy-6-phenylmethoxyoxan-2-yl]methyl benzoate