Phenolic antioxidants from the whole plant of Phyllanthus urinaria

	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
	2007
发表期刊	CHEMISTRY & BIODIVERSITY
ISSN	1612-1872
卷号	4 期号:9 页码:2246-2252
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).
关键词	Punica-granatum Emblica Tannins Constituents Leaves Roots Ellagitannins Acid
学科领域	Biochemistry & Molecular Biology ; Chemistry ; Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000249863500021
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/1985
专题	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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