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《Chinese Traditional and Herbal Drugs》 2006-02
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A novel lupane triterpene from seeds of Ziziphus jujuba var.spinosa

HE Feng~1,PAN Qin~(2),MIN Zhi-da~1(1.China Pharmaceutical University,Nanjing 210038,China;2.Research Center,Tianjin Zhongxin Pharmaceuticals,Tianjin 300457,China)  
Objective To study the chemical constituents from the seeds of Ziziphus jujuba var.spinosa,which is used as a sedative herbal medicine in China.Methods The constituents were separated and purified by silica gel column.Their structures were elucidated based on their physicochemical properties and spectral analysis.Results Six compounds were obtained from 95% EtOH extracts in the seeds of Z.jujuba var.spinosa.They were identified as 2α,3β-dihydroxy-lup-20(29)-en-28-oic acid methyl ester(Ⅰ),β-sitosterol(Ⅱ),betulin(Ⅲ),betulinic acid(Ⅳ),hexadexanoic acid 2,3-dihydroxypropyl ester(Ⅴ),and daucosterol(Ⅵ).Conclusion Compound Ⅰ is a novel lupane triterpene named as alphitolic acid methyl ester,compound Ⅴ is obtained from the seeds of Z.jujuba var.spinosa for the first time.
【CateGory Index】: R284.1
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