Abstract
Artemisinin and its derivatives are peroxide-containing compounds targeting P. falciparum. We review here structural analogues of bicyclic peroxides belonging to the G factors family presenting antimalarial properties. They were synthesised under Mannich type conditions, followed by an autoxidation step resulting exclusively in the peroxide. As the electron transfer from haem or free iron to the peroxide is the first step in the mode of action of artemisinin-like compounds, the redox properties of some endoperoxides were studied by electrochemistry allowing the evaluation of the reduction standard potentials. The Fe(II) induced reduction was also investigated and the reactivity of the C-centered radical intermediate formed was linked to the antimalarial activity. These bicyclic peroxides both with various hybrid molecules containing the endoperoxide framework were evaluated in vitro against Plasmodium falciparum. They exhibited moderate to good activities.
Keywords: C-centered radical, cyclic peroxide, hybrid molecules, malaria.
Current Topics in Medicinal Chemistry
Title:Antimalarial Bicyclic Peroxides Belonging to the G-Factor Family: Mechanistic Aspects of their Formation and Iron (II) Induced Reduction
Volume: 14 Issue: 14
Author(s): Jeremy Ruiz, Joelle Azema, Corinne Payrastre, Michel Baltas, Beatrice Tuccio, Henri Vial and Christiane Andre-Barres
Affiliation:
Keywords: C-centered radical, cyclic peroxide, hybrid molecules, malaria.
Abstract: Artemisinin and its derivatives are peroxide-containing compounds targeting P. falciparum. We review here structural analogues of bicyclic peroxides belonging to the G factors family presenting antimalarial properties. They were synthesised under Mannich type conditions, followed by an autoxidation step resulting exclusively in the peroxide. As the electron transfer from haem or free iron to the peroxide is the first step in the mode of action of artemisinin-like compounds, the redox properties of some endoperoxides were studied by electrochemistry allowing the evaluation of the reduction standard potentials. The Fe(II) induced reduction was also investigated and the reactivity of the C-centered radical intermediate formed was linked to the antimalarial activity. These bicyclic peroxides both with various hybrid molecules containing the endoperoxide framework were evaluated in vitro against Plasmodium falciparum. They exhibited moderate to good activities.
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Ruiz Jeremy, Azema Joelle, Payrastre Corinne, Baltas Michel, Tuccio Beatrice, Vial Henri and Andre-Barres Christiane, Antimalarial Bicyclic Peroxides Belonging to the G-Factor Family: Mechanistic Aspects of their Formation and Iron (II) Induced Reduction, Current Topics in Medicinal Chemistry 2014; 14 (14) . https://dx.doi.org/10.2174/1568026614666140808154326
DOI https://dx.doi.org/10.2174/1568026614666140808154326 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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