[关键词]
[摘要]
目的 对红花Carthamus tinctorius叶的生物碱类化学成分进行研究。方法 采用硅胶、Sephadex LH-20、MCI以及半制备HPLC等色谱方法进行分离纯化,根据理化性质和现代波谱学技术鉴定化合物的结构。结果 从红花叶的甲醇提取物中分离得到2个β-卡波林生物碱,分别鉴定为4,9-二甲氧基-1-乙基-β-卡波林(1)和4-甲氧基-1-乙基-β-卡波林(2),其中化合物1为新化合物。化合物1和2均对人源肝癌细胞HepG2具有细胞毒活性,半数抑制浓度(IC50)值分别为(15.20±0.58)μmol/L和(17.40±0.33)μmol/L。结论 化合物1为新化合物,命名为红花碱A。化合物1和2为首次从该属植物中分离得到,且均具有细胞毒活性。
[Key word]
[Abstract]
Objective To study the alkaloids from leaves of Carthamus tinctorius.Methods The alkaloids were isolated and purified by silica gel, MCI, Sephadex LH-20 column chromatographies, and semi-preparative HPLC, and their structures were elucidated by physical and spectroscopic analysis.Results A new β-carboline alkaloid, 4,9-dimethoxy-1-ethyl-β-carboline (1) along with one known analogue 4-methoxy-1-ethyl-β-carboline (2), were isolated from the leaves of C. tinctorius. Compounds 1 and 2 showed the cytotoxicity against HepG2 cell lines with IC50 values of (15.2 ±0.58) μmol/L and (17.4 ±0.33) μmol/L, respectively.Conclusion Compounds 1 and 2 are firstly obtained from Carthamus genus, and compound 1 is a new compound named carthine A. Both compounds 1 and 2 exhibited cytotoxicity against HepG2 cell lines.
[中图分类号]
[基金项目]
陕西省自然科学基础研究计划(2017SF-365);陕西省教育厅自然科学专项项目(16JK1196)