A New Glycoside, Brachynoside, Isolated from Clerodendron brachyanthum SCHAUER.
作者:Yun-Lian LIN、Yueh-Hsiung KUO
DOI:10.1248/cpb.40.1928
日期:——
Eudesmin, syringaresinol dimethyl ether, kusaginin and brachynoside were isolated from the ethanol extract of the leaves of Clerodendron brachyanthum. The new glycoside, branchynoside, was assigned as 2-(3, 4-dimethoxyphenyl)ethyl 3-O-α-L-rhamnopyranosyl-4-O-(3, 4-dihydroxycinnamoyl)-β-D-glucopyranoside from studies on partial methylation and methanolysis products and from analysis of spectroscopic evidence.
从蕨类植物蕨叶的乙醇提取物中分离出了桉叶素、丁香树脂酚二甲醚、草木犀苷和蕨苷。通过对部分甲基化和甲醇分解产物的研究以及对光谱证据的分析,将新的苷--branchynoside 定义为 2-(3,4-二甲氧基苯基)乙基 3-O-α-L-鼠李糖基-4-O-(3,4-二羟基肉桂酰基)-β-D-吡喃葡萄糖苷。