方法：采用了各种层析分离技术，分得单体，经理化常数和光谱解析确定结构。

METHODS:Isolation and identification were carried out by using various chromatography techniques and spectral methods.

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方法：采用了各种层析分离技术，分得单体，经理化常数和光谱解析确定结构。

METHODS:Isolation and identification were carried out by using various chromatography techniques and spectral methods.

youdao