ESR-spin trapping in the presence of cyclodextrins. Detection of PBN-superoxide spin adduct

被引：31

作者：

Karoui, H

Tordo, P

机构：

[1] UMR 6517 CNRS, Lab SREP, F-13397 Marseille, France

[2] Univ Aix Marseille 1, F-13397 Marseille, France

[3] Univ Aix Marseille 3, F-13397 Marseille, France

来源：

TETRAHEDRON LETTERS | 2004年 / 45卷 / 05期

关键词：

PBN; superoxide; spin trapping; cyclodextrins; electron spin resonance;

D O I：

10.1016/j.tetlet.2003.11.074

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

In phosphate buffer solution the half-life of the PBN-Superoxide spin adduct is very short. However, as a result of the formation of inclusion complexes, its ESR signal was easily detected for up to 25 min when the trapping of superoxide anion with PBN was carried Out in the presence of different cyclodextrins. Furthermore, the formation of these inclusion complexes results in a significant protection of the PBN-superoxide adduct against L-ascorbate monoanion reduction. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1043 / 1045

页数：3

共 14 条

[1]

[Anonymous], ELECT SPIN RESONANCE

[2] SPIN TRAPPING - ELECTRON-SPIN-RESONANCE PARAMETERS OF SPIN ADDUCTS [J].