Constituents of the chinese crude drug "Wujiapi". IX. Structure of glycoside H2, a potentiator of NGF-mediated nerve fiber outgrowth.
作者:SEIICHI SAKUMA、SACHIKO KAWANISHI、JUNZO SHOJI
DOI:10.1248/cpb.28.163
日期:——
Glycoside H2, C56H92O25, [α]D -25.9°(MeOH), which causes marked potentiation of the effect of NGF (nerve growth factor), was isolated from Bei-Wujiapi (the cortex of Periploca sepium BGE., Asclepiadaceae) and its chemical structure was established to be ⊿5-pregnene-3β, 16α, 20α-triol 3-O-[2-O-acetyl-β-D-digitalopyranosyl (1→4)-β-D-cymaro-pyranoside] 20-O-[β-D-glucopyranosyl (1→6)-β-D-glucopyranosyl (1→2)-β-D-digitalopyranoside] (1).
从北五加皮(Periploca sepium BGE.的皮层)中分离出苷H2,C56H92O25,[α]D -25.9°(MeOH),它能明显增强NGF(神经生长因子)的作用,并确定其化学结构为⊿5-孕烯-3β,16α,20α-triol 3-O-[2-O-乙酰-β-二ig]、5-孕烯-3β,16α,20α-三醇 3-O-[2-O-乙酰基-β-D-二吡喃糖基(1→4)-β-D-香豆吡喃糖苷] 20-O-[β-D-吡喃葡萄糖基(1→6)-β-D-吡喃葡萄糖基(1→2)-β-D-二吡喃糖苷] (1)。