(22S,25R)-26-acetyloxy-3β-tert-butyldimethylsilyloxycholest-5-ene-16β,22-diol 16-O-[O-2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->2)-3,4,6-tri-O-acetyl-α-D-glucopyranoside] 在
重铬酸吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 48.0h,
以83%的产率得到(25R)-26-acetyloxy-3β-tert-butyldimethylsilyloxy-16β-hydroxycholest-5-en-22-one 16-O-[O-2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->2)-3,4,6-tri-O-acetyl-α-D-glucopyranoside]