Coumaroyl flavonol glycosides from the leaves of Ginkgo biloba

被引：74

作者：

Tang, YP

Lou, FC

Wang, JH

Li, YF

Zhuang, SF

机构：

[1] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Bioorgan & Nat Prod Chem, Shanghai 200032, Peoples R China

[2] China Pharmaceut Univ, Dept Nat Med Chem, Nanjing 210038, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Bioorgan & Nat Prod Chem, Shanghai 200032, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Mat Med, Shanghai 200031, Peoples R China

来源：

PHYTOCHEMISTRY | 2001年 / 58卷 / 08期

关键词：

Ginkgo bilobu L; ginkgoaceae; flavonol glycoside; antioxidant activity;

D O I：

10.1016/S0031-9422(01)00320-X

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Two coumaroyl flavonol glycosides, isorhamnetin 3-O-alpha -L-[6'''-p-coumaroyl-(beta -D)-glucopyranosyl-(1,2)-rhamnopyranoside], and kaempferol 3-O-alpha -L-[6'''-p-coumaroyl-(beta -D)-glucopyranosyl-(1,2)-rhamnopyranoside]-7-O-beta -D-glucopyranoside, were isolated from the n-BuOH extract of Ginkgo biloba leaves. These two, together with six other flavonol glycosides, kaempferol 3-O-alpha -L-[6'''-p-coumaroyl-(beta -D)-glucolpyranosyl-(1,2)-rhamnopyranoside], quercetin 3-O-alpha -L-[6'''-p-coumaroyl-(beta -D)-glucopyranosyl-(1,2)-rhamnopyranoside], quercetin 3-O-alpha -L-[6'''-p-coumaroyl-(beta -D)-glucopyranosyl-(1,2)-rhamnopyranoside]-7-O-beta -D-glucopyranoside, quercetin 3-O-beta -D-glucopyranosyl-(1-2)-alpha -L-rhamnopyranoside, quercetin 3-O-beta -rutinoside, and quercetin 3-O-beta -D-glucopyranoside, showed profound antioxidant activities in DPPH and cytochrome-c reduction assays using the HL-60 cell culture system. (C) 2001 Elsevier Science Lid, All rights reserved.

引用

页码：1251 / 1256

页数：6