Methods: Solvent partition and column chromatography used to isolate and purify Laggera pterodonta compounds.The isolated compounds were further elucidated by high field NMR spectroscopy.

• 方法:应用萃取,色谱等分离手段及各种波谱技术,对样品中各极性部位的化学成分进行分离纯化和结构测定。