[(2R,3R,4S,5R)-5-acetyloxy-3-azido-2-methyl-6-(2,2,2-trichloroethanimidoyl)oxyoxan-4-yl] acetate 、
methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-glucopyranoside 在
三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
以92%的产率得到methyl 3-O-(4'-azido-2',3'-di-O-acetyl-4',6'-dideoxy-β-D-glucopyranosyl)-2-azido-4,6-O-benzylidene-2-deoxy-β-D-glucopyranoside