Benzyl (2R,3R,4R)-4-benzyloxy-2-benzyloxymethyl-3-hydroxypyrrolidine-1-carboxylate 、 (3R,4S,5R,6R)-3,4-bis(benzyloxy)-6-((benzyloxy)methyl)-5-(((2R,3R,4S,5S,6S)-3,4,5-tris(benzyloxy)-6-(fluoromethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl 2,2,2-trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 、
三乙胺 作用下,
以
乙醚 为溶剂,
反应 2.0h,
以13%的产率得到(2R,3R,4R)-4-Benzyloxy-N-benzyloxycarbonyl-2-(benzyloxymethyl)pyrrolidin-3-yl 2,3,6-tri-O-benzyl-4-O-(2,3,4-tri-O-benzyl-6-fluoro-6-deoxy-β-D-glucopyranosyl)-α-D-glucopyranoside