Antimalarial Dual Drugs Based on Potent Inhibitors of Glutathione Reductase from Plasmodium falciparum
摘要:
Plasmodium parasites are exposed to higher fluxes of reactive oxygen species and need high activities of intracellular antioxidant systems providing a steady glutathione flux. As a future generation of dual drugs, 18 naphthoquinones and phenols (or their reduced forms) containing three different linkers between the 4-aminoquinoline core and the redox active component were synthesized. Their antimalarial effects have been characterized in parasite assays using chloroquine-sensitive and -resistant strains of Plasmodium, alone or in drug combination, and in the Plasmodium berghei rodent model. In particular, two tertiary amides 34 and 36 showed potent antimalarial activity in the low nanomolar range against CQ-resistant parasites. The ability to compete both for (Fe-III)protoporphyrin and for chloroquine transporter was determined. The data are consistent with the presence of a carrier for uptake of the short chloroquine analogue 2 but not for the potent antimalarial amide 34, suggesting a mode of action distinct from chloroquine mechanism.
Synthetic Antimalarials. The Preparation of Certain 4-Aminoquinolines<sup>1</sup>
作者:Nathan L. Drake、Hugh J. Creech、John A. Garman、Stuart T. Haywood、Richard M. Peck、John O. van Hook、Edward Walton
DOI:10.1021/ja01211a021
日期:1946.7
TRIOXANE DIMERS HAVING HIGH ANTICANCER AND LONG-LASTING ANTIMALARIAL ACTIVITIES
申请人:Posner Gary H.
公开号:US20090291923A1
公开(公告)日:2009-11-26
The invention provides novel trioxane dimers having formulae III, IV or V: methods for their preparation, pharmaceutical compositions containing these compounds, and methods for treating cancer and/or malaria using these compounds and compositions.
[EN] TRIOXANE DIMERS HAVING HIGH ANTICANCER AND LONG-LASTING ANTIMALARIAL ACTIVITIES<br/>[FR] DIMERES DE TRIOXANE PRESENTANT UNE FORTE ACTIVITE ANTICANCEREUSE ET UNE LONGUE ACTIVITE ANTIMALARIQUE
申请人:UNIV JOHNS HOPKINS
公开号:WO2007067333A2
公开(公告)日:2007-06-14
[EN] The invention provides novel trioxane dimers having formulae III, IV or V: methods for their preparation, pharmaceutical compositions containing these compounds, and methods for treating cancer and/or malaria using these compounds and compositions. [FR] L'invention concerne de nouveaux dimères de trioxane représentés par les formules (III), (IV) ou (V), des procédés de fabrication de ces composés, des compositions pharmaceutiques contenant ces composés, et des procédés de traitement du cancer et/ou de la malaria faisant intervenir ces composés et compositions.
Antimalarial Dual Drugs Based on Potent Inhibitors of Glutathione Reductase from <i>Plasmodium falciparum</i>
Plasmodium parasites are exposed to higher fluxes of reactive oxygen species and need high activities of intracellular antioxidant systems providing a steady glutathione flux. As a future generation of dual drugs, 18 naphthoquinones and phenols (or their reduced forms) containing three different linkers between the 4-aminoquinoline core and the redox active component were synthesized. Their antimalarial effects have been characterized in parasite assays using chloroquine-sensitive and -resistant strains of Plasmodium, alone or in drug combination, and in the Plasmodium berghei rodent model. In particular, two tertiary amides 34 and 36 showed potent antimalarial activity in the low nanomolar range against CQ-resistant parasites. The ability to compete both for (Fe-III)protoporphyrin and for chloroquine transporter was determined. The data are consistent with the presence of a carrier for uptake of the short chloroquine analogue 2 but not for the potent antimalarial amide 34, suggesting a mode of action distinct from chloroquine mechanism.
Pearson; Jones; Cope, Journal of the American Chemical Society, 1946, vol. 68, p. 1227