Biological evaluation of donor-acceptor aminonaphthoquinones as antitumor agents
作者:Julio Benites、Jaime A. Valderrama、Karina Bettega、Rozangela Curi Pedrosa、Pedro Buc Calderon、Julien Verrax
DOI:10.1016/j.ejmech.2010.10.006
日期:2010.12
Several members of the phenylamino-1,4-naphthoquinone series were prepared in order to investigate structure-activity relationships (SAR) and to explore the antitumor effects associated with this scaffold. The cytotoxic effects of the aminoquinones (EC50) against a panel of cancer cell lines (MCF7, DU145 and T24 cells) and healthy fibroblasts (BALB/3T3) were assessed in vitro using the MTT reduction assay 48 h after drug exposure. SAR analysis of the aminonaphthoquinone series showed that insertion of a chlorine atom in the acceptor quinone nucleus and/or insertion of a methyl group at the nitrogen atom of the donor phenylamino group induced significant changes in cytotoxic activity. Quinones 7 and 9, which exhibited the highest selective indexes (5.73 and 6.29, respectively), were further characterized using the following assays: Colony formation, caspase-3 activity, and ATP content. The results showed that aminoquinone 7 strongly influenced ATP levels and impaired the proliferative capacity of T24 cells without activating caspase-3. (C) 2010 Elsevier Masson SAS. All rights reserved.
2-Phenylaminonaphthoquinones and related compounds: Synthesis, trypanocidal and cytotoxic activities
作者:Ivan Sieveking、Pablo Thomas、Juan C. Estévez、Natalia Quiñones、Mauricio A. Cuéllar、Juan Villena、Christian Espinosa-Bustos、Angélica Fierro、Ricardo A. Tapia、Juan D. Maya、Rodrigo López-Muñoz、Bruce K. Cassels、Ramon J. Estévez、Cristian O. Salas
DOI:10.1016/j.bmc.2014.07.030
日期:2014.9
A series of new 2-aminonaphthoquinones and relatedcompounds were synthesized and evaluated in vitro as trypanocidal and cytotoxic agents. Some tested compounds inhibited epimastigote growth and trypomastigote viability. Several compounds showed similar or higher activity and selectivity as compared with current trypanocidal drug, nifurtimox. Compound 4l exhibit higher selectivity than nifurtimox against