dimethylthexylsilyl 3-O-allyloxycarbonyl-2-azido-4-O-benzyl-2-deoxy-β-D-glucopyranoside 、
[(4aR,7R,8R,8aS)-7-(9H-fluoren-9-ylmethoxycarbonylamino)-2,2-dimethyl-6-(2,2,2-trichloroethanimidoyl)oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] (3R)-3-phenylmethoxydodecanoate 在
三氟甲磺酸 、 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以94%的产率得到dimethylthexylsilyl 3-O-[(R)-3-benzyloxy-dodecanoyl]-2-deoxy-2-(9-fluorenylmethoxycarbonyl)-4,6-O-isopropylidene-β-D-glucopyranosyl-(1->6)-3-O-allyloxycarbonyl-2-azido-4-O-benzyl-2-deoxy-β-D-glucopyranoside