Two new flavanonol glycosides from Gordonia chrysandra

Two new flavanonol glycosides named chrysandrosides A and B were isolated from the roots of Gordonia chrysandra Cowan. Their structures were determined by 1D and 2D NMR, FAB-MS techniques and chemical methods. Chrysandrosides A and B showed pronounced hepatoprotective activities against o-galactosamine （o-GalN）-induced toxicity in rat hepatic epithelial stemlike cells （WB-F344）. 2007 Dong Ming Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

黄药大头茶茎化学成分研究

目的:研究黄药大头茶茎的化学成分。方法:利用硅胶、ODS、Sephadex LH-20柱色谱、制备型高效液相色谱等方法进行分离纯化,根据理化常数测定及波谱数据分析鉴定化合物结构。结果:从黄药大头茶茎中分离得到8个化合物,分别鉴定为:lupeportlandol(1)、甜叶悬钩子苷(2)、甜菊苷(3)、3,4,5-三甲氧基苯基-6-O-紫丁香酰基-β-D-葡萄糖苷(4)、莱苞迪苷F(5)、杜尔可苷B(6)、香橙素(7)、异牡荆黄素-2″-O-β-D-葡萄糖苷(8)。结论:以上化合物均为首次从大头茶属植物中分离得到。