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[Objective]To study the chemical constituents in the aerial parts of Lespedeza davurica ( Laxm. ) Schindl. [Method]The chemical constituents were extracted by solvent method,isolated and purified by various chromatographic methods,and spectroscopic methods such as NMR were adopted to identify their structures. [Result] A total of six compounds were isolated from the aerial parts of Lespedeza davurica ( Laxm. ) Schindl. ,including kaempferol ( I) ,quercetin ( II) ,kaempferol 3-O-β-D-glucopyranoside ( III) ,rutin ( IV) ,vanillic acid ( V) and β-sitosterol ( VI) . [Conclusion]Compound V ( vanillic acid) was isolated from this plant for the first time.
[Objective] To study the chemical constituents in the aerial parts of Lespedeza davurica (Laxm.) Schindl. [Method] The chemical constituents were extracted by solvent method, isolated and purified by various chromatographic methods, and spectroscopic methods such as NMR were identify their structures. [Result] A total of six compounds were isolated from the aerial parts of Lespedeza davurica (Laxm.) Schindl., including kaempferol (I), quercetin (II), kaempferol 3-O-beta-D-glucopyranoside III), rutin (IV), vanillic acid (V) and β-sitosterol (VI). [Conclusion] Compound V (vanillic acid) was isolated from this plant for the first time.