Novel flavonol glycoside, 7-O-methyl mearnsitrin, from Sageretia theezans and its antioxidant effect

被引：80

作者：

Chung, SK ^{[1
]}

Kim, YC

Takaya, Y

Terashima, K

Niwa, M

机构：

[1] Kyungpook Natl Univ, Dept Food Sci & Technol, Taegu 702701, South Korea

[2] Korea Food Res Inst, Songnam 463746, South Korea

[3] Meijo Univ, Fac Pharm, Tempa Ku, Nagoya, Aichi 4688503, Japan

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2004年 / 52卷 / 15期

关键词：

flavonol glycosides; 7-O-methylmearnsitrin; Sageretia theezans; ESR; LDL oxidation;

D O I：

10.1021/jf049526j

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

A novel flavonol glycoside, 7-O-methylmearnsitrin (7,4'-O-dimethylmyricetin 3-O-alpha-L-rhamnopyranoside), and myricetrin, kaempferol 3-O-alpha-L-rhamnopyranoside, europetin 3-O-alpha-L-rhamnoside, and 7-O- methyl quercetin 3-O-alpha-L-rhamnopyranoside were isolated from the leaves of Sageretia theezans, and their chemical structures were identified by spectroscopic analyses including two-dimensional NMR (HSQC, HMBC). Whereas myricetrin, europetin 3-O-alpha-L-rhamnoside, and 7-O-methylquercetin 3-O-alpha-L-rhamnopyranoside showed stronger activities than ascorbic acid and alpha-tocopherol, 7-O- methylmearnsitrin showed very weak antioxidant activities by ESR and LDL oxidation inhibition tests.

引用

页码：4664 / 4668

页数：5

共 28 条

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