天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (增刊1): 100-103.

• 研究简报 • 上一篇    下一篇

土家药凹叶景天保肝作用及化学成分研究

徐冲1,白殊同2,冷静1,沈洁1,刘霞1,郭小红1,蒋伟3*   

  1. 1重庆市中医研究院 古验方与中药制剂研究所;2重庆市中医研究院 中医特色诊疗工程技术研究中心,重庆 400021;3江西中医药大学 中药资源与民族药研究中心,南昌330004  
  • 出版日期:2018-07-31 发布日期:2018-07-31
  • 基金资助:

    重庆市科委基础科学与前沿技术研究项目(cstc2014jcyjA10080)

 The Hepatoprotective Effect and Chemical Constituents of Sedum emarginatum Mig.

XU Chong1, BAI Shu-tong2, LENG Jing1, SHEN Jie1, LIU Xia1, GUO Xiao-hong1, JIANG Wei3*   

  1. 1Institute of Ancient Prescription and Chinese Medicine Preparation,Chongqing Academy of Traditional Chinese Medicine; 2Engineering Technology Research Center of TCM Characteristic Diagnosis and Treatment,Chongqing Academy of Traditional Chinese Medicine,Chongqing 400021,China; 3Research Center of Natural Resources of Chinese Medicinal Materials and National Medicine,Jiangxi University of Traditional Chinese Medicine,Nanchang 330004,China
  • Online:2018-07-31 Published:2018-07-31

摘要: 以保肝活性为导向,利用色谱分离技术,从土家族还阳药凹叶景天乙醇提取物的乙酸乙酯部位中分离得到9个化合物,根据波谱分析鉴定结构为:二十七烷三醇(1)、(3S,5R,6S,9R)-megastigmane-3,9-diol(2)、柽柳素(3)、槲皮素(4)、木犀草素(5)、异鼠李素(6)、对香豆酸(7)、胡萝卜素(8)、谷甾醇(9)。化合物1~7为首次从该植物中分离得到。体外保肝活性实验显示,化合物4~7在给药剂量范围内均具有抑制CCl4造成的正常人肝细胞L-02氧化损伤作用,并具有剂量依赖关系。由此可见,凹叶景天的黄酮类成分是其保肝作用的主要物质基础,其作用机制与抗脂质过氧化有关。

关键词: 凹叶景天, 保肝, 抗氧化, 化学成分

Abstract: Guided by liver protective activity,chromatographic separation technology was applied to the ethyl acetate portion of ethanol extract of Sedum emarginatum Mig.Nine compounds were isolated and identified.heptacosane-triol (1),(3S,5R,6S,9R)-megastigmane-3,9-diol (2),tamarixetin (3),quercetin (4),luteolin (5),isorhamnetin (6),p-coumaric acid (7),β-carotene (8),β-sitosterol (9).Compounds 1-7 are isolated from this species for the first time.Compounds 4-7 all exhibited oxidative damage inhibitory activity which is induced by carbon tetrachloride in normal human hepatocyte L-02 with dose- dependent relationships.It follows that the main effective substances of Sedum emarginatum Mig are flavonoids,and the mechanisms of its hepto-protection effect is related to antioxidation.

Key words: Sedum emarginatum Mig., hepto-protection, antioxidation, chemical constituents

中图分类号:  R284 Q946