Chemical Components of the Hevea brasiliensis Skim

The chemical constituents of the Hevea brasiliensis skim were studied.Compounds were isolated and purified by silica gel column chromatography and Sephadex LH-20.Their structures were identified by physicochemical properties and spectral analyses.Thirteen compounds were obtained and the twelve ones of them were identified : Friedelin(Ⅰ),Lupeol(Ⅱ),β-Sitosterol(Ⅲ),Hexadecanoic acid(Ⅳ),Heptadecanoic acid(Ⅴ),Daucosterol(Ⅵ),Nicotine acid(Ⅶ),Succinic acid(Ⅷ),Gallac acid(Ⅸ),Fructose(Ⅹ),Quebrachitol(Ⅺ),6-hydroxy-cleistopholine(Ⅻ).Compounds Ⅰ,Ⅱ,Ⅵ,Ⅶ Ⅸ and Ⅻ were isolated from Hevea brasiliensis skim for the first time.