2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->2)-3,4,6-tri-O-acetyl-α-D-glucopyranosyl trichloroacetimidate 、
(22S,25R)-26-acetyloxy-3β-tert-butyldimethylsilyloxycholest-5-ene-16β,22-diol 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 0.25h,
以10%的产率得到(22S,25R)-26-acetyloxy-3β-tert-butyldimethylsilyloxycholest-5-ene-16β,22,diol 22-O-[O-2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->2)-3,4,6-tri-O-acetyl-β-D-glucopyranoside]