3-O-<<α-L-rhamnosyl-(1->4)-(β-D-glucopyranosyl-(1->3))-β-D-glucopyranosyl>-(1->2)-β-fucopyranosyl>-13β,28-epoxyolean-11-ene-3β,23-diol 在
对甲苯磺酸 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以7 mg的产率得到b-D-Galactopyranoside, (3b,4a)-23,28-dihydroxy-11-methoxyolean-12-en-3-ylO-6-deoxy-a-L-mannopyranosyl-(1®4)-O-b-D-glucopyranosyl-(1®3)-O-[b-D-glucopyranosyl-(1®2)]-6-deoxy- (9CI)