Chemical Components of Ethanol Extract of Cymbopogon citratus
We separated and purified the chemical components of ethanol extract of Cymbopogon citratus by recrystallization,silica gel column chromatography,reverse phase column chromatography,preparative thin-lay-er chromatography,Sephadex LH-20 gel column chromatography,and high performance liquid chromatogra-phy,and identified their structures by 1 HNMR and 13CNMR.The results show that eight compounds are isola-ted from the ethanol extract of Cymbopogon citratus,which are identified as β-sitosterol(1),oleanolic acid(2),uvaol(3),kaempferol(4),betalinic acid(5),pomolic acid(6),trans-p-coumaric acid 4-O-β-D-glucopyridineano-side(7),cis-p-coumaric acid 4-O-β-D-glucopyridineanoside(8).
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