Studies on the Chemical Constituents of Sladenia Celastrifolia Lurz

From the leaf and stem parts of Sladenia celastrifolia Lurz,seven compounds,3α,3′,4′,5,7-Pentahydroxyflavan(Ⅰ),3β,3′,4′,5,7-Pentahydroxyflavan(Ⅱ),3β,4′,5,7-Tetrahydroxyflavan(Ⅲ),Ursolic acid(Ⅳ),Maslinic acid(Ⅴ),22E,24R-ergosta-7,22-dien-3α-O-D-Glucopyranoside(Ⅵ),and 12-Oleanene-3,22,24-triol-3β-O-L-Arabinopyranoside(Ⅶ) were isolated.Their structures were identified through physicochemical and spectral analysis.Three flavanol compoundsⅠ,Ⅱ,and Ⅲ were isolated from the genus for the first time.