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杜鹃属植物的化学分类学研究

来源：花匠小妙招时间：2024-11-20 03:52

摘要：

本文通过对177种(或亚种，变种)杜鹃叶中16种黄酮类化合物和3种其它酚性成分的高效硅胶

薄层阶式层析和聚酰胺薄层层析，发现中国杜鹃属植物中的黄酮类成分的共同特征是存在着槲皮素的多种单糖甙；有的属下类群以几种甙共存或某种甙缺乏为特征；杨梅树皮甙。棉子皮亭甙尽管不是普遍检出的成分，但在某些属下类群中分布较集中，具有独特的分类价值．作者进一步讨论了化学性状的定量或半定量研究对杜鹃属植物化学分类的意义。

关键词: 杜鹃属, 黄酮, 黄酮醇甙, 化学分类学, 定量分析

Abstract:

Analysis of 16 flavonoids and 3 other phenols in 177 samples of the genus

Rhododendron was carried out by HPTLC silica gel plate-stepwise development and

polyamide thin layer. The result reveals that the presence of monoglycosides of quercetin is a

general character of flavonoids in the Chinese rhododendrons; some taxa are characterized by

presence or absence of certain glycosides; although myricetin, and gossypetin are generally

rare in this genus, they are concentrated in some taxa, and therefore they are valuable in

chemotaxonomy. The significance of quantitative and semi-quantitative assessment of chem-

ical characters for chemotaxonomy of Rhododendron is also discussed.

Key words: Rhododendron L, Flavonoids, Flavonol glycosides, Chemotaxonomy, Quantitative analysis