Objective:To investigate the chemical constituents from roots of Boehmeria nivea.Method:The constituents were isolated by repeated column chromatography and preparative liquid chromatography;and their structures were elucidated by chemical properties and spectroscopic analyses.Result:Seven compounds were isolated and their structures were identified as tormentic acid (1),hederagenin(2),maslinic acid(3),2α-hydroxyursolic acid(4),trans-p-hydroxycinamic acid(5),2,4,4'-trihydroxychalcone(6),rutin(7).Conclusion:Compounds 1-6 were obtained from this genus for the first time.
Boehmeria niveaconstituentsisolation and identification