Phenolic compounds from the flowers of Nepalese medicinal plant Aconogonon molle and their DPPH free radical-scavenging activities

被引：6

作者：

Joshi, Khem Raj ^{[1
,2
]}

Devkota, Hari Prasad ^{[1
,2
]}

Watanabe, Takashi ^{[3
]}

Yahara, Shoji ^{[1
]}

机构：

[1] Kumamoto Univ, Grad Sch Pharmaceut Sci, Chuo Ku, Kumamoto 8620973, Japan

[2] Kumamoto Univ, Hlth Life Sci Interdisciplinary & Glocal Oriented, Program Leading Grad Sch, Kumamoto 8620973, Japan

[3] Kochi Univ Technol, Res Org Reg Alliances, Kami, Kochi 7820003, Japan

来源：

NATURAL PRODUCT RESEARCH | 2014年 / 28卷 / 23期

关键词：

Aconogonon molle; antioxidant activity; flavonoid; Nepalese medicinal plant; Polygonaceae; QUERCETIN GLYCOSIDES; ACID; ANTIOXIDANTS; POLYPHENOLS;

D O I：

10.1080/14786419.2014.915829

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Eleven phenolic compounds, quercetin (1), quercetin 3-O-beta-D-galactopyranoside (2), quercetin 3-O-(6"-O-galloyl)-beta-D-galactopyranoside (3), quercetin 3-O-(6"-O-caffeoyl)-beta-D-galactopyranoside (4), quercetin 3-O-beta-D-glucopyranoside (5), rutin (6) quercetin 3-O-alpha-L-arabinopyranoside (7), quercetin 3-O-alpha-L-arabinofuranoside (8), protocatechulic acid (9), gallic acid (10) and chlorogenic acid (11), were isolated from the flowers of Aconogonon molle, a Nepalese medicinal plant. Structures of these compounds were elucidated on the basis of spectroscopic methods. All these compounds were isolated for the first time from flowers, and five compounds (4, 5, 8, 9 and 11) were isolated for the first time from A. molle. All of these isolated compounds were evaluated for their in vitro antioxidant activity by using the 1,1-diphenyl-2-picrylhydrazyl radical-scavenging method. Quercetin (1), quercetin glycosides (2-8) and gallic acid (10) exhibited potent antioxidant activity.

引用

页码：2208 / 2210

页数：3

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