METHODS: The compounds were separated by solvent extraction, column chromatography and thin layer chromatography on silica gel and their structures were elucidated by spectroscopic means.

• 方法:采用溶剂萃取、柱层析和薄层层析方法分离目标化合物,并用波谱学方法完成化合物的结构分析与鉴定。