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Leaves Burnet ( Sanguisorba officinalis L. var longifolia ( Bert ) Yu et Li) Sanguisorba (Rosaceae) , Rosaceae genus (Sanguisorba L) plants , mainly distributed in Northeast China , North China , East China , Guangxi and Guizhou , cooling blood to stop bleeding , efficacy of detoxification sores . In this thesis , the system leaves Burnet chemical composition . Leaves Burnet rhizomes ethanol extract was washed successively with chloroform, ethyl acetate , n- butanol the extracted chromatography chloroform fraction and ethyl acetate and part of the compound by means of spectroscopy ( GC -MS , 1 < / sup> H- NMR 13 -NMR ) structures were elucidated . Part from the chloroform , ethyl acetate fraction were isolated 13 compounds , now fully identified the structure of which nine compounds were : chrysophanol (Ⅰ), emodin ether ( II ) , β - sitosterol alcohol ( III ) ferulic acid ( IV ) , bear fruit acid ( V ) , gallic acid ( VI ) , the quercetin ( VII ) , the kaempferol phenol ( VIII ) , catechin ( IX) . All compounds were isolated from the plant for the first time , and the content of the active ingredient in the plant was measured . 3.51% of the total flavonoids , tannin content of 9.60% .
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