荸荠皮酚性成分及其抗氧化活性研究(英文)  

Phenolic Constituents and Antioxidant Activity of Eleocharis tuberosa Peels

作　　者：李行任[1] 罗杨合[1] 何隽[2] 彭丽艳[2] 吴兴德[2] 杜如男 赵勤实[2] 

机构地区：[1]贺州学院桂东特色资源研究与开发广西高校重点建设实验室,贺州542899 [2]中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室,昆明650204

出　　处：《天然产物研究与开发》2013年第12期1615-1620,共6页Natural Product Research and Development

基　　金：Key Scientific Research Project in University of Guangxi(201202ZD092);Guangxi Scientific Research and Technology Development Projects(GKG,11107010-3-9);Hezhou University Scientif-ic Research Projects(2012ZRKY10)

摘　　要：从荸荠皮(Eleocharis tuberosa)70%丙酮提取物的乙酸乙酯部分共分离得到1个新化合物和8个已知化合物。通过波谱数据,分别鉴定为荸荠酚甲(1)、1,2',4',6'-四乙酰基-3,6-二阿魏酸蔗糖苷(2)、1,2',6'-三乙酰基-3,6-二阿魏酸蔗糖苷(3)、丁香脂素(4)、阿魏酸(5)、咖啡酸(6)、对香豆酸(7)、肉桂酸(8)和对羟基苯甲酸(9)。测试了所得化合物的抗氧化活性。结果表明,化合物5和6具有较强的抗氧化活性。所有化合物均为首次从该植物中分离得到,化合物1为新化合物。Phenolic constituents were isolated from Eleocharis tuberosa via extraction with 70% aqueous acetone,purified by various column chromatographies, and identified on the basis of physical and spectral data. A new compound and eight known compounds were isolated, and identified as eleocharinol A （ 1 ）, 1,2＇, 4＇, 6＇-tetraacetyl-3,6-diferuloylsucrose （2） ,1,2＇ ,6＇-triacetyl-3,6-dfferuloylsucrose （3）, （ ＋ ）-syringaresinol （4）,trans-fenalic acid （5）, eaffeic acid （6） ,p- coumaric acid （7） ,cinnamic acid （8） and 4-hydroxylbenz0ic acid （9）. The potential antioxidant activity of the isolated compounds was evaluated using DPPH radical scavenging assay and reducing power assay. Compounds 5 and 6 showed strong antioxidant activities. To our knowledge, all the compounds were isolated from the peels of E. tuberosa ~for the first time and compound 1 is a new compound.

关 键 词：荸荠皮 酚性成分 抗氧化活性 

分 类 号：R284.1[医药卫生—中药学]