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.
出处
《天然产物研究与开发》
CAS
CSCD
北大核心
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)
关键词
荸荠皮
酚性成分
抗氧化活性
Eleocharis tuberosa peels
phenolic constituents
antioxidant activity
