方法利用反相层析的方法进行分离纯化，根据化合物的化学性质与光谱数据鉴定其结构。
Methods to isolate the constituents by reverse phase chromatography, and characterize their structures by the analysis of chemical property and spectral data.
方法采用各种色谱技术进行分离纯化，通过化合物理化性质及波谱数据进行结构鉴定。
METHODS the compounds were isolated and purified by various chromatographic techniques and their structures were elucidated by physicochemical properties and spectroscopic data.
方法利用硅胶、凝胶等色谱技术分离纯化化学成分，通过理化性质和波谱数据确证其结构。
METHODS Chromatography was used to isolate and purify chemical constituents, and their structures were elucidated based on spectral evidence together with physiochemical properties.
方法利用各种色谱技术进行分离纯化，根据化合物的理化性质和光谱数据进行结构鉴定。
MethodsThe chemical constituents were isolated and purified with silica gel chromatography, their structures were determined by spectral analysis and chemical evidence.
方法利用硅胶柱色谱法对牛白藤进行分离纯化，根据理化性质和核磁共振谱数据鉴定其结构。
Methods the compounds were isolated and purified by repeated silica column chromatography and identified by their physical characteristics and nuclear magnetic resonance spectrum.
方法利用硅胶柱色谱法对牛白藤进行分离纯化，根据理化性质和核磁共振谱数据鉴定其结构。
Methods the compounds were isolated and purified by repeated silica column chromatography and identified by their physical characteristics and nuclear magnetic resonance spectrum.
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