Methods The compounds were isolated by column chromatography with silica gel and purified by Sephadex LH-20 and ODS-HPLC. The structures were identified by means of NMR and MS analyses(1H-NMR,13C-NMR,and ESI-MS).

• 方法利用正相硅胶柱色谱、葡聚糖凝胶Sephadex LH-20、反相制备色谱等手段进行分离纯化,并通过1H-NMR、13C-NMR、ESI-MS等波谱技术进行结构鉴定。