[关键词]
[摘要]
目的 研究长白山地区钝叶瓦松Orostachys malacophyllus茎中活性成分。方法 使用色谱法分离钝叶瓦松甲醇提取物的醋酸乙酯萃取物中的化合物,利用核磁共振波谱、质谱等技术进行结构鉴定,采用CCK-8方法测试活性。结果 从钝叶瓦松茎甲醇提取物中分离鉴定出5个成分,分别为苹果酸-1-乙酯(1)、2-(3,4-二羟基苯酰基氧代)-苹果酸单乙酯(2)、2-(3,4-二羟基苯酰基氧代)-苹果酸二甲酯(3)、2-对羟基苯酰基氧代-苹果酸二甲酯(4)、邻苯二甲酸二异丁酯(5)。结论 化合物1~5为从该属植物中首次分离得到,其中化合物2是新化合物,命名为瓦松酚酸;其对HeLa细胞的细胞毒活性的IC50值为111.5 μmol/L。
[Key word]
[Abstract]
Objective To explore the active constituents from the stems of Orostachys malacophyllus in Changbai Mountain. Methods The ethyl acetate fraction of the methanol extract from the stems of O. malacophyllus was separated by chromatographic methods, structure identification was by means of nuclear magnetic resonance and mass spectra, and the activity was determined by CCK-8 experiment. Results Five compounds were isolated and identified as 1-ethyl-2-hydroxysuccinate (1), 1-ethyl-2-O-[(3,4-dihydroxybenzoyl) oxy]-succinate (2), 1,4-dimethy-2-O-[(3,4-dihydroxybenzoyl) oxy]-succinate (3), 1,4-dimethy-2-O-[(4-dihydroxybenzoyl) oxy]-succinate (4), and diisobutyl phthalate (5). Conclusion Compounds 1-5 are isolated from the plants of this genus for the first time. Among them, compound 2 is a new compound named orostachysolic acid, and exhibits cytotoxicity against HeLa cell with IC50 value of 111.5 μmol/L.
[中图分类号]
[基金项目]
国家自然科学基金资助项目(21365023)