摘要
目的研究连钱草Glechoma longituba的化学成分及其体外抗氧化活性。方法采用溶剂萃取、硅胶柱色谱以及反相制备液相色谱进行分离和纯化,并利用1H-NMR、13C-NMR、ESI-MS波谱技术进行结构鉴定,采用DPPH自由基清除实验对分离得到的化合物进行体外抗氧化活性筛选。结果从连钱草中分离得到10个化合物,分别鉴定为大波斯菊苷(1)、二氢咖啡酸(2)、咖啡酸(3)、异黑麦草内酯(4)、催吐萝芙叶醇(5)、连钱草酮(6)、芹菜素(7)、金色酰胺醇(8)、(+)-落叶松树脂醇(9)、(-)-丁香树脂醇(10)。结论化合物2、4和8～10为首次从活血丹属植物中分离得到,其中化合物9和10为首次从连钱草中分离得到的木脂素类化合物。DPPH自由基清除实验结果显示化合物2、3、9和10具有较强的抗氧化活性。
Objective To study the chemical constituents from Glechoma longituba and their anti-oxidant activity in vitro. Methods The chemical constituents were isolated and purified by solvent extraction, repeated silica gel column chromatography, and reverse phase preparative HPLC. Their structures were identified on the basis of ESI-MS and NMR spectra. The anti-oxidant activities of these compounds were screened by DPPH free radical scavenging assay in vitro. Results Ten compounds were isolated and elucidated as cosmosiin （1）, dihydrocaffeic acid （2）, caffeic acid （3）, isololiolide （4）, vomifoliol （5）, glecholone （6）, apigenin （7）, aurantiamide （8）, （＋）-lariciresinol （9）, and （-）-syringaresinol （10）. Conclusion Compounds 2, 4, and 8--10 are isolated from the plants in Glechoma L. for the first time; Compounds 9 and 10 are lignans firstly obtained from this plant. DPPH free radical scavenging assays show that compounds 2, 3, 9, and 10 exhibit potential anti-oxidant activity.
出处
《中草药》
CAS
CSCD
北大核心
2013年第4期387-390,共4页
Chinese Traditional and Herbal Drugs
基金
"重大新药创制"国家科技重大专项(2009ZX09313-036)
