Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

被引：69

作者：

Ito, Hideyuki ^{[1
]}

Okuda, Takahiro

Fukuda, Toshiyuki

Hatano, Tsutomu

Yoshida, Takashi

机构：

[1] Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pharmacognosy, Okayama 7008530, Japan

[2] POLA Chem Ind Inc, Totsuka Ku, Yokohama, Kanagawa 2440812, Japan

[3] Matsuyama Univ, Fac Pharmaceut Sci, Matsuyama, Ehime 7908578, Japan

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2007年 / 55卷 / 03期

关键词：

walnuts; Juglans regia; Juglandaceae; glansreginin A; glansreginin B; glansrin D; 2-hydroxycinchoninic acid; antioxidant activity; SOD-like effect; radical scavenger;

D O I：

10.1021/jf062872b

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.

引用

页码：672 / 679

页数：8

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