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Chemical constituents of Rheum glabricaule (I)

Baoquan Tao

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Abstract

Object 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 the chloroform part, which were identified as chrysophanol (Ⅰ), physcion (Ⅱ), aloe-emodin (Ⅲ), emodin (Ⅳ), and β-sitosterol (Ⅴ). Conclusion All above compounds are obtained from this plant for the first time.

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What this paper is about

Object 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 the chloroform part, which were identified as chrysophanol (Ⅰ), physcion (Ⅱ), aloe-emodin (Ⅲ), emodin (Ⅳ), and β-sitosterol (Ⅴ). Conclusion All above compounds are obtained from this plant for the first time.

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Available abstract

Object 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 the chloroform part, which were identified as chrysophanol (Ⅰ), physcion (Ⅱ), aloe-emodin (Ⅲ), emodin (Ⅳ), and β-sitosterol (Ⅴ). Conclusion All above compounds are obtained from this plant for the first time.

Key concepts: Emodin, Aloe emodin, Chemistry, Chemical constituents, Silica gel, Chromatography, Rheum (plant), Chloroform

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