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。
The structures were elucidated on the basis of physicochemical properties and spectral methods and their anti-hypoxic activities were evaluated by PC12 cells.
对分离得到的化合物采用PC12细胞进行活性追踪，评价其体外抗缺氧活性。
Methods the compounds were isolated by column chromatographic methods, their structures were elucidated on the basis of physical properties and spectral analysis.
方法采用各种柱色谱法进行分离纯化，运用理化性质和波谱法进行结构鉴定。
Method: Compounds were separated by solvent extraction and column chromatography with silica gel and structures were elucidated by chemical evidence and spectral analysis.
方法：溶剂提取和硅胶柱色谱法进行分离，理化性质和光谱数据鉴定其结构。
METHOD: the chemical constituents were isolated by using polyamide, silica gel column chromatography and HPLC, and the chemical structures were elucidated by UV, IR, NMR and MS.
方法：采用聚酰胺、硅胶柱色谱、高效液相色谱分离化学成分，UV、IR、NMR、MS等方法进行结构鉴定。
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 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 The compounds were separated by column chromatography with silica gel and prep-HPLC, whoso structures were elucidated on the basis of spectroscopic data and physicochemical properties.
方法利用硅胶柱色谱、制备高效液相色谱等方法进行分离，根据化合物的光谱数据和理化性质鉴定其结构。
Their structures and some of the stereochemistry were elucidated by means of various modern spectroscopic techniques and chemical methods.
运用多种现代波谱技术结合化学手段，确定了它们的化学结构和部分立体构型。
Methods: Column chromatography was used in the isolation procedure. The structures of isolated compounds were elucidated by spectral data.
方法：柱色谱法分离其成分，利用光谱数据确定其化学结构。
Methods: Column chromatography was used in the isolation procedure. The structures of isolated compounds were elucidated by spectral data.
方法：柱色谱法分离其成分，利用光谱数据确定其化学结构。
应用推荐