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Studies on chemical constituents of Rheum glabricaule
Yuhui Wei1, Xin'an Wu, Chengzhong Zhang
1Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou.
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.
