Acylated and non-acylated flavonol monoglycosides from the Indian minor spice nagkesar (Mammea longifolia)

被引：29

作者：

Rao, LJM ^{[1
]}

Yada, H ^{[1
]}

Ono, H ^{[1
]}

Yoshida, M ^{[1
]}

机构：

[1] Natl Food Res Inst, Tsukuba, Ibaraki 3058642, Japan

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2002年 / 50卷 / 11期

关键词：

Mammea longifolia; Gittiferae; nagkesar; radical scavenging activity; flavonoids; quercetin; 3-O-(2; 4; ''-di-E-p-coumaroyl)-alpha-L-rhamnopyranoside; 3-O-(3; shikimic acid derivative;

D O I：

10.1021/jf011461m

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

A methanol extract of nagkesar (buds of Mammea longifolia), which showed strong radical scavenging activity, yielded 13 compounds by separations using column chromatography and HPLC. Structure elucidation of these compounds was achieved by H-1 and C-13 NMR, including DQF-COSY, TOCSY, DEPT, HMQC, HSQC, and HMBC. They include two new compounds, quercetin 3-O-(2",4"di-E-P-coumaroyl)-alpha.-L-rhamno-pyranoside and quercetin 3-O-(3",4"-di-E-p-coumaroyl)-alpha-L-rhamnopyranoside, along with known compounds kaempferol, quercetin, the isopropylidenedioxy derivative of shikimic acid, kaempferol 3-O-(2",4"-di-E-p-coumaroyl)-alpha-L-rhamnopyranoside, kaempferol 3-O-(3",4"di-E-p-coumaroyl)-alpha-L-rhamnopyranoside, kaempferol 3-O-alpha-L-rhamnopyranoside, quercetin 3-O-alpha-L-rhamnopyranoside, shikimic acid, kaempferol 3-O-beta-D-glucopyranoside, quercetin 3-O-beta-D-glucopyranoside, and beta-sitosterol 3-O-beta-D-glucopyranoside.

引用

页码：3143 / 3146

页数：4

共 12 条

[1] AN ANTIMICROBIAL KAEMPFEROL-DIACYL-RHAMNOSIDE FROM PENTACHONDRA-PUMILA [J].