Design, synthesis, and physicochemical and biological characterization of a new iron chelator of the family of hydroxychromenes

J Med Chem. 2002 Dec 19;45(26):5776-85. doi: 10.1021/jm021022u.

Abstract

Increasing evidence suggests that iron plays an important role in tissue damage both during chronic iron overload diseases (i.e., hemochromatosis) and when, in the absence of actual tissue iron overload, iron is delocalized from specific carriers or intracellular sites (inflammation, neurodegenerative diseases, postischaemic reperfusion, xenobiotic intoxications, etc.). In the present work, we appropriately modified an iron chelator of the hydroxychromene family in order to obtain a tridentate chelator that would inactivate the iron redox cycle after its complexation, with a view to using this molecule in human therapy and/or in disease prevention. We synthesized such a chelator for the first time and show, by different physicochemical analysis, its tridentate nature and, importantly, its capacity to chelate iron with enough strength to inhibit both iron-dependent H(2)O(2) generation and lipid peroxidation in in vitro biological systems.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Benzopyrans / chemical synthesis*
  • Benzopyrans / chemistry
  • Benzopyrans / pharmacology
  • Chromones / chemical synthesis*
  • Chromones / chemistry
  • Chromones / pharmacology
  • Crystallography, X-Ray
  • Electrochemistry
  • Electron Spin Resonance Spectroscopy
  • Ferric Compounds / chemistry
  • Hydrogen Peroxide / metabolism
  • In Vitro Techniques
  • Iron Chelating Agents / chemical synthesis*
  • Iron Chelating Agents / chemistry
  • Iron Chelating Agents / pharmacology
  • Lipid Peroxidation / drug effects
  • Microsomes, Liver / metabolism
  • Potentiometry
  • Rats
  • Spectrometry, Mass, Electrospray Ionization
  • Thiobarbituric Acid Reactive Substances / metabolism

Substances

  • 3-hydroxy-2-(5-hydroxypentyl)chromen-4-one
  • Benzopyrans
  • Chromones
  • Ferric Compounds
  • Iron Chelating Agents
  • Thiobarbituric Acid Reactive Substances
  • Hydrogen Peroxide