Oxidation of flavonols with Cu(II), Fe(II) and Fe(III) in aqueous media

被引：60

作者：

Jungbluth, G ^{[1
]}

Rühling, I ^{[1
]}

Ternes, W ^{[1
]}

机构：

[1] Tierarztliche Hsch Hannover, Zentrum Lebensmittelwissensch, ZA Chem Analyt & Endokrinol, D-30173 Hannover, Germany

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 2000年 / 09期

关键词：

D O I：

10.1039/b002323j

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Reactions of flavonols, 3-methoxyflavones, and flavones with Cu2+, Fe3+, and Fe2+ in acidic aqueous solutions with three different organic modifiers are investigated. Complexation may be followed by an oxidation of flavonols, yielding additional peaks in HPLC chromatograms of the reaction mixtures. The products are synthesized with high yields and isolated in mg amounts. They are characterized as 2-(hydroxybenzoyl)-2-hydroxybenzofuran-3(2H)-ones, using two-dimensional NMR techniques and PBI-NCI and -EI-MS. The electrochemical behaviour of the compounds is further investigated with cyclic voltammetry.

引用

页码：1946 / 1952

页数：7

共 33 条

[1]

Agrawal P.K., 1989, STUDIES ORGANIC CHEM, V39

[2]

Aust SD, 1997, ANALUSIS, V25, pM47

[3]

Brown JE, 1998, BIOCHEM J, V330, P1173

[4] Directly coupled high performance liquid chromatography - Inductively coupled plasma-mass spectrometry for the determination of organometallic species in tea [J].