Methods Compounds were isolated by silica column chromatography, and their structures were elucidated by spectral methods.
方法用硅胶柱层析进行分离，用有机波谱学的方法进行结构鉴定。
Methods: the compounds were isolated by silica gel column chromatography, and their structures were elucidated by spectral methods.
方法：利用硅胶柱色谱法对化合物进行分离，运用波谱方法确定结构。
Methods: the constituents were isolated by chromatographic methods, and their structures were elucidated by spectroscopic evidences.
方法：采用柱色谱分离其成分，波谱学方法鉴定其结构。
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