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This paper soaked by the use of ethanol at room temperature Mongolian linden leaves and xylem extraction, and then a series of organic solvents ( followed by petroleum ether , ethyl acetate, ethanol) were extracted Mongolian linden leaves and xylem petroleum ether extract , ethyl acetate extract , ethanol extract. By column chromatography , thin layer chromatography , extraction, recrystallization, etc. Separation and purification techniques for separation and purification of the extract , obtained from the seven compounds and a mixture of an alkane . By infrared spectroscopy , elemental analysis , proton nuclear magnetic resonance NMR, 13C NMR and 2D NMR HMQC, HMBC and COSY technology to clarify the structure of the six compounds , namely : dandelion terpene alcohols twenty-eight carbonate , cork terpene ketones , daucosterol , 15 carbon alcohol , beta - sitosterol , 19 carbonate . Compounds obtained in the study of the chemical composition of Mongolian linden , the dandelion terpene alcohols twenty-eight of carbonate , daucosterol , cork triterpenoid ketone , three pentadec alcohol , 19 carbonate are found for the first time ; beta - Valley sterol as Mongolian linden xylem first discovered . Mongolian linden leaves composition by gas chromatography - mass spectrometry ( GC - MS ) used in conjunction with technical analysis to determine the chemical composition of 45 and standard peak area method to determine the relative content of the ingredients have been identified , the total oily component of 80.35% , mainly composed of fatty acids, alkanes, alcohols . Isolated six compounds and the nature of the compounds identified by GC-MS and their potential anti- beetle activity are discussed.
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