枝穗大黄化学成分研究

Studies on the Chemical Constituents in Root of Rheum rhizastachyum

目的 :研究枝穗大黄的化学成分。方法 :柱色谱和薄层色谱分离 ;UV ,IR ,MS ,NMR等技术鉴定结构。结果 :分离鉴定了 6个化合物 ,为大黄酚 ,大黄素 ,没食子酸 ,蔗糖 ,大黄酚 1 O β D 葡萄糖苷 ,大黄素 1 O β D 葡萄糖苷。结论 :均为首次从该植物中分离得到。

Objective:To investigate the chemical constituents from the root and rhizome of Rheum rhizastachyum .Method:The compounds were isolated by column chromatography on silica gel, Sephadex LH 20,MCI gel CHP 20P separately and their structures were elucidated by chemical and spectral technology.Result:Six compounds were isolated and identified as chrysophanol, emodin, gallic acid, sucrose, 1 O β D glucopyranosyl chrysophanols, 1 O β D glucopyranosyl emodin.Conclusion:all the compounds were obtained from this plant for the first time.