Phenolic antioxidants from the whole plant of Phyllanthus urinaria | |
Xu, Min; Zha, Zhong-Jun; Qin, Xue-Ling; Zhang, Xiang-Lan; Yang, Chong-Ren; Zhang, Ying-Jun | |
刊名 | CHEMISTRY & BIODIVERSITY |
2007 | |
卷号 | 4期号:9页码:2246-2252 |
关键词 | Punica-granatum Emblica Tannins Constituents Leaves Roots Ellagitannins Acid |
ISSN号 | 1612-1872 |
文献子类 | Article |
英文摘要 | The 1.1-diphenyl-2-picryclydrazyl (DPPH) assay on the extract of Phyllanthus urinaria L. (Euphorbiaceae) displayed Considerable radical-scavenging activity (SC50=14.3 mu g/ml). Further bioassay-guided purification of the extract led to the isolation of a series of 15 phenolic compounds, including the ellagitannins 1-7, the flavonoids 8-10, and the simple hydroxylated (or glycosylated) aromatic acids 11-15. Their structures were identified by spectroscopic analyses and comparison with authentic samples or literature data. The structure of repandinin B (1) was for the first time fully assigned by 1D- and 2D-NMR experiments. The phenolic compounds 1, 3,4, 6,9, 11, and 15 have not been isolated before from the title plant. The antioxidant activities and mushroom-tyrosinase-inhibitory activities of all compounds were determined by DPPH-radical-scavenging and mushroom-tyrosinase-inhibitory assays (Table 2). |
学科主题 | Biochemistry & Molecular Biology ; Chemistry ; Multidisciplinary |
WOS关键词 | PUNICA-GRANATUM ; EMBLICA ; TANNINS ; CONSTITUENTS ; LEAVES ; ROOTS ; ELLAGITANNINS ; ACID |
WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
语种 | 英语 |
WOS记录号 | WOS:000249863500021 |
公开日期 | 2011-11-24 |
内容类型 | 期刊论文 |
源URL | [http://ir.kib.ac.cn:8080/handle/151853/1985] |
专题 | 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 |
作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources W China, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Min,Zha, Zhong-Jun,Qin, Xue-Ling,et al. Phenolic antioxidants from the whole plant of Phyllanthus urinaria[J]. CHEMISTRY & BIODIVERSITY,2007,4(9):2246-2252. |
APA | Xu, Min,Zha, Zhong-Jun,Qin, Xue-Ling,Zhang, Xiang-Lan,Yang, Chong-Ren,&Zhang, Ying-Jun.(2007).Phenolic antioxidants from the whole plant of Phyllanthus urinaria.CHEMISTRY & BIODIVERSITY,4(9),2246-2252. |
MLA | Xu, Min,et al."Phenolic antioxidants from the whole plant of Phyllanthus urinaria".CHEMISTRY & BIODIVERSITY 4.9(2007):2246-2252. |
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