Volume 78, Issue 4 pp. 267-273
Article

2,3-Bis(2-pyridyl)-5,8-quinoxalinediones with metal chelating properties: Synthesis and biological evaluation

Sylviane Giorgi-Renault

Sylviane Giorgi-Renault

Laboratoire de Recherche sur les heétérocycles azotés, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, Paris, France

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Patricia Gebel-Servolles

Patricia Gebel-Servolles

Laboratoire de Recherche sur les heétérocycles azotés, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, Paris, France

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Philippe Helissey

Philippe Helissey

Laboratoire de Recherche sur les heétérocycles azotés, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, Paris, France

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Jean Renault

Corresponding Author

Jean Renault

Laboratoire de Recherche sur les heétérocycles azotés, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, Paris, France

Laboratoire de Recherche sur les heétérocycles azotés, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, Paris, FranceSearch for more papers by this author
Jean-Luc Bernier

Jean-Luc Bernier

Unité 16 INSERM, Place de Verdun, 59045 Lille, France

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Jean-Pierre Henichart

Jean-Pierre Henichart

Unité 16 INSERM, Place de Verdun, 59045 Lille, France

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Suzanne Cros

Suzanne Cros

Laboratoire de Pharmacologie et de Toxicologie Fondamentales, CNRS, Toulouse, France

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First published: April 1989
Citations: 1

Abstract

The synthesis of 2,3-bis(2-pyridyl)-5,8-quinoxalinediones has been carried out in order to provide new antitumor drugs related to streptonigrin. Some derivatives have been found to possess significant cytotoxic properties and their mechanism of action has been studied. They were found to induce single-strand cleavage of covalently closed circular DNA (ccc-DNA). This biological activity requires an apparent in situ reduction (NADH activation) of the quinone to a hydroquinone or semiquinone radical, is facilitated by the presence of Cu(II), and involves activation of molecular oxygen to highly reactive radical species. Thus, although less active than the parent drugs, these molecules provide an attractive rationale for the observed cytotoxic and antitumor potency, as well as the cell-free single strand DNA cleavage efficacy of that family of drugs.

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