Methods The compounds were isolated with silica gel, PTLC and HPLC, and their structures were elucidated by acid hydrolysis, physical and chemical data and spectroscopic analyses (IR, NMR, MS, HMQC, HMBC) as well as chemical correlations.

• 方法 用硅胶柱色谱、薄层色谱及高效液相色谱等进行分离 ,通过酸水解、理化常数和波谱学分析 (IR ,NMR ,MS ,HMQC ,HMBC)鉴定化合物结构。