照山白有效成分的化学研究
Che mical Studies on the Active Constituents of Rhododendron micranthu m Turcz
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摘要: 我们在研究黄蜀葵花有效成分时,发现金丝桃甙有显著的局部止痛作用和促进溃疡愈合作用[1~4],但金丝桃甙在该植物中含量较低。为了扩大资源,以芦丁为起始原料,合成了金丝桃甙[5]。据文献报道分布于我国东北、华北、西北十个省区资源丰富的照山白(RhododendronmicranthumTurcz.)的枝叶也含有金丝桃甙[6]。我们用HPLC法测定该植物中金丝桃甙含量为1.3%,于是以该植物枝叶为原料,进行了金丝桃甙的提取、分离工作。本文报道用聚酰胺层析法从照山白枝叶中分得四种黄酮醇类成分,经理化常数…Abstract: Four constituents were isolated from Rhododendron micranthum Turcz . Their structures were identified ashyperin ,astragalin ,kaempferol ,and quercetin . Kaempferol wasisolated from the plantforthe firsttime . Hyperin wasthe main analgesic active const