Lignan glycosides and flavonoids from Saraca asoca with antioxidant activity

被引：74

作者：

Sadhu, Samir Kumar

Khatun, Amina

Phattanawasin, Panadda

Ohtsuki, Takashi

Ishibashi, Masami

机构：

[1] Chiba Univ, Grad Sch Pharmaceut Sci, Inage Ku, Chiba 2638522, Japan

[2] Silpakorn Univ, Fac Pharm, Nakhon Pathom 73000, Thailand

来源：

JOURNAL OF NATURAL MEDICINES | 2007年 / 61卷 / 04期

关键词：

Saraca asoca; Caesalpiniaceae; lignan glycoside; flavonoid; antioxidant activity;

D O I：

10.1007/s11418-007-0182-3

中图分类号：

R914 [药物化学];

学科分类号：

100701 ;

摘要：

Five lignan glycosides, lyoniside, nudiposide, 5-methoxy-9-beta-xylopyranosyl-(-)-isolariciresinol, icariside E-3, and schizandriside, and three flavonoids, (-)-epicatechin, epiafzelechin-( 4 beta -> 8)-epicatechin and procyanidin B-2, together with beta-sitosterol glucoside, were isolated from a methyl alcohol ( MeOH) extract of Saraca asoca dried bark. Their structures were determined by 1D and 2D nuclear magnetic resonance ( NMR) and mass spectroscopic analysis. Antioxidant activities were evaluated by 1,1-diphenyl-2-picrylhydrazyl ( DPPH) radical-scavenging assay.

引用

页码：480 / 482

页数：3

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