ethyl 2-azido-6-O-benzyl-2-deoxy-3-O-fluorenylmethoxycarbonyl-1-thio-β-D-glucopyranoside 、 2,2-Dimethyl-propionic acid (3R,4S,5S,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-(dibutoxy-phosphoryloxy)-tetrahydro-pyran-3-yl ester 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以92%的产率得到ethyl (3,4,6-tri-O-benzyl-2-O-pivaloyl-β-D-galactopyranosyl)-(1->4)-2-azido-6-O-benzyl-2-deoxy-3-O-fluorenylmethoxycarbonyl-1-thio-β-D-glucopyranoside