2006•Zhōnghuá yàoxué zázhìRequires access

Studies on Chemical Constituents of Rheum glabricaule Sam.(II)

Wei Yu-hui

Abstract

OBJECTIVE To study the chemical constituents in the root of Rheum glabricaule.METHODS Compounds were isolated by various column chromatographies with silica gel.Their structures were elucidated by spectral analysis(MS,~1H-NMR,~(13)C-NMR) and chemical evidence.RESULTS Five compounds were isolated from this plant,and identified as dibutyl phthalate(Ⅰ),emodin-8-O-β-D-glucopyranoside(Ⅱ),aloe-emodin-3-(hydroxymethyl)-O-β-D-glucopyranoside(Ⅲ),β-sitosterol-3-O-β-D-(6′-O-acyl)-glucopyranoside(Ⅳ) and kaempferol(Ⅴ),respectively.CONCLUSION All above compounds are obtained from this plant for the first time.

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Key concepts: Emodin, Chemistry, Dibutyl phthalate, Silica gel, Chemical constituents, Chromatography, Kaempferol, Rheum (plant)