采用Harris和Sanderson法从我国南方松香中提取和纯化得到（-）-7，13-二烯-1-8枞酸，并通过光谱分析技术对其结构进行了确证．%The （-）-7，13-Aabietadien-18-ooic acid was isolated and purified from the rosin in South of China by the methods of Harris and Sanderson. Its structure was identified by the spectras of UV， IR， NMR and MS.
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