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Studies on chemical constituents of Rheum glabricaule.

Yuhui Wei, Xinan Wu, Cheng‐Zhong Zhang, Chong Li

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Abstract

OBJECTIVE: To study the chemical Constituents in the root of Rheum glabricaule. METHODS: Compounds were isolated by various column chromatographies with sillica gel. Their structures were identified by spectral analysis (MS, 1HNMR, 13 CNMR) and chemical evidences. RESULTS: Seven compounds were isolated from this plant, including n-hexacosnic acid (I), palmitic acid (II), daucosterol (III), chrysophanol-8-Me ether (IV), citreorosein (V), chrysophanol 8-O-beta-D-glucopyranoside (VI) and 2,5-dimethyl-7-methoxychromone (VII). CONCLUSION: All above compounds are obtained from this plant for the first time.

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What this paper is about

OBJECTIVE: To study the chemical Constituents in the root of Rheum glabricaule. METHODS: Compounds were isolated by various column chromatographies with sillica gel. Their structures were identified by spectral analysis (MS, 1HNMR, 13 CNMR) and chemical evidences. RESULTS: Seven compounds were isolated from this plant, including n-hexacosnic acid (I), palmitic acid (II), daucosterol (III), chrysophanol-8-Me ether (IV), citreorosein (V), chrysophanol 8-O-beta-D-glucopyranoside (VI) and 2,5-dimethyl-7-methoxychromone (VII). CONCLUSION: All above compounds are obtained from this plant for the first time.

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Available abstract

OBJECTIVE: To study the chemical Constituents in the root of Rheum glabricaule. METHODS: Compounds were isolated by various column chromatographies with sillica gel. Their structures were identified by spectral analysis (MS, 1HNMR, 13 CNMR) and chemical evidences. RESULTS: Seven compounds were isolated from this plant, including n-hexacosnic acid (I), palmitic acid (II), daucosterol (III), chrysophanol-8-Me ether (IV), citreorosein (V), chrysophanol 8-O-beta-D-glucopyranoside (VI) and 2,5-dimethyl-7-methoxychromone (VII). CONCLUSION: All above compounds are obtained from this plant for the first time.

Key concepts: Daucosterol, Chemistry, Chemical constituents, Palmitic acid, Chromatography, Rheum (plant), Spectral analysis, Carbon-13 NMR

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