獐牙菜属植物中酮类化合物的波谱学特征

Spectroscopic Characteristics of Xanthones in Natural Products

本文结合国内外文献,总结了作者从美丽獐牙菜中获得的酮类化合物的结构特征及其UV、IR、NMR、MS波谱学规律。着重分析了酮的NMR数据,总结出了依据羟基和羰基的δ值确定其取代类型,跟据糖端基质子的化学位移值及耦合常数来判断连接位置和构型的核磁共振波谱规律。为今后进一步分析鉴定酮类化合物结构及进行波谱数据的归属提供理论基础。

This paper reviewed the structural characteristics of xanthones isolated from Swert/a species and its spectral features including UV, IR, NMR and MS. By mainly analyzing the NMR data, a preliminary conclusion can be drawn that the substitution type of xanthones is determined by the chemical shift of the hydroxyl group and earbonyl group, as its po- sition and configuration of the connection can be decided by chemical shift together with coupling constants of the sugar anomeric protons. It provided a theoretical basis for the further analysis of the structure and spectrum data ownership of xanthones.