凤眼草化学成分的分离与鉴定

目的对凤眼草的质量分数95%乙醇提取物进行分离并鉴定。方法采用硅胶柱色谱、聚酰胺柱色谱等方法分离纯化,1H-NMR、13C-NMR等方法进行结构鉴定。结果分离得到5个黄酮类化合物,分别鉴定为kaempferol(1)、quercetin(2)、kaempferol3,7-O-bis-α-L-rhamnopyranoside(3)、kaempferol-3-O-α-L-arabinofuranosyl-7-O-α-L-rhamnopyranoside(4)、quercetin3-O-β-D-glucopyrano-side(5)。结论化合物3~5为首次从臭椿属植物中分离得到。

Isolation and identification of chemical constituents from the fruits of Ailanthus altissima (Mill) Swingle

Objective To study the chemical constituents from the 95% EtOH extract of the fruits of Ailanthus a1tissima (Mil1.)Swingle．Methods The constituents were isolated by silica gel column chromatography and polyamide column chromatography, and the ¹H-NMR, ¹³C-NMR spectroscopic analysis were employed for the structural elucidation．Results Compounds 1-5 were obtained and their structures were identified as kaempferol (1), quercetin (2), kaempferol 3,7-O-bis-α-L-rhamnopyranoside (3), kaempferol-3-O-α-L-arabinofuranosyl-7-O-α-L-rhamnopyranoside (4), quercetin 3-O-β-D- glucopyranoside (5). Conclusion Among them compounds 3-5 are isolated from this genus for the first time.