Anti-tumoral activity of imidazoquines, a new class of antimalarials derived from primaquine
作者:Iva Fernandes、Nuno Vale、Victor de Freitas、Rui Moreira、Nuno Mateus、Paula Gomes
DOI:10.1016/j.bmcl.2009.10.081
日期:2009.12
The growth inhibitory activity of imidazoquines, antimalarial imidazolidin-4-ones derived from primaquine, on human cancer cell lines HT-29, Caco-2, and MCF-7 has been evaluated. Primaquine, N-dipeptidyl-primaquine derivatives, and other quinolines have been included in the study for comparison purposes. Primaquine and some of its derivatives were significantly active against the MCF-7 human breast cancer cell line, so these compounds might represent useful leads targeted at the development of novel specific agents against breast cancer. Conversely, all compounds were generally inactive against HT-29, with only one of the imidazoquines having IC50 below 50 mu M. Activities against the Caco-2 cell line were modest and did not follow any defined trend. (C) 2009 Elsevier Ltd. All rights reserved.
Primaquine dipeptide derivatives bearing an imidazolidin-4-one moiety at the N-terminus as potential antimalarial prodrugs
作者:Nuno Vale、Fátima Nogueira、Virgílio E. do Rosário、Paula Gomes、Rui Moreira
DOI:10.1016/j.ejmech.2009.01.018
日期:2009.6
Primaquine dipeptide derivatives bearing an imidazolidin-4-one moiety at the N-terminus were synthesized and evaluated as potential transmission-blocking antimalarial prodrugs. All compounds were hydrolyzed to the parent dipeptide derivative of primaquine in neutral and basic solutions, with half lives ranging from 0.7 to 31 h at 37 °C, depending on the nature of the substituents present in the imidazolidin-4-one