title: Oxidation of tris-(p-carboxyltetrathiaaryl)methyl radical EPR probes: evidence for their oxidative decarboxylation and molecular origin of their specific ability to react with O2*-.
abstract: Tris-(p-carboxyltetrathiaaryl)methyl radical EPR probes are very efficiently oxidized by superoxide and alkylperoxyl radicals with selective formation of quinone-methide products; this should explain the previously reported specific measurement of O2*- using these EPR probes.
authors.affiliation: Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, CNRS UMR 8601, 45 rue des Saints Pères, 75006 Paris, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Decroos
authors.forename: Yun
authors.initials: Y
authors.lastname: Li
authors.forename: Gildas
authors.initials: G
authors.lastname: Bertho
authors.forename: Yves
authors.initials: Y
authors.lastname: Frapart
authors.forename: Daniel
authors.initials: D
authors.lastname: Mansuy
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Boucher
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D006575:Heterocyclic Compounds, 3-Ring / Q000737:chemistry*; D045563:Indolequinones / Q000737:chemistry; D015335:Molecular Probes / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D005609:Free Radicals; D006575:Heterocyclic Compounds, 3-Ring; D045563:Indolequinones; D015335:Molecular Probes; C068040:quinone methide; D010100:Oxygen