3,4,6-tri-O-acetyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranosyl-(1->4)-3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-D-glucopyranoside tichloroacetimidate 、
tert-butyldimethylsilyl 3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranosyl-(1->4)-3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
乙腈 为溶剂,
以74%的产率得到[(2R,3S,4R,5R,6S)-3,4-diacetyloxy-6-[(2R,3S,4R,5R,6S)-6-[(2R,3S,4R,5R,6S)-6-[(2R,3S,4R,5R,6S)-6-[tert-butyl(dimethyl)silyl]oxy-5-(3,4-dimethyl-2,5-dioxopyrrol-1-yl)-4-phenylmethoxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-5-(3,4-dimethyl-2,5-dioxopyrrol-1-yl)-4-phenylmethoxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-5-(3,4-dimethyl-2,5-dioxopyrrol-1-yl)-4-phenylmethoxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-5-(3,4-dimethyl-2,5-dioxopyrrol-1-yl)oxan-2-yl]methyl acetate