title: Synthesis and antimycobacterial activity of new quinoxaline-2-carboxamide 1,4-di-N-oxide derivatives.
abstract: As a continuation of our research and with the aim of obtaining new antituberculosis agents which can improve the current chemotherapeutic antituberculosis treatments, new series of quinoxaline-2-carboxamide 1,4-di-N-oxide derivatives were synthesized and evaluated for in vitro antituberculosis activity against Mycobacterium tuberculosis strain H(37)Rv, using the radiometric BACTEC 460-TB methodology. Active compounds were also screened by serial dilution to assess toxicity to a VERO cell line. The results indicate that some compounds exhibited a good antituberculosis activity and the arylcarboxamide analogues 3, 8, and 9 were the most active compounds (EC(90)/MIC1). Also, the cytotoxic effects indicate that these compounds have a good Selectivity Index (SI).
authors.affiliation: Unidad en Investigación y Desarrollo de Medicamentos, Centro de Investigación en Farmacobiología Aplicada (CIFA), Universidad de Navarra, Pamplona, Spain.
authors.forename: Belén
authors.initials: B
authors.lastname: Zarranz
authors.forename: Andrés
authors.initials: A
authors.lastname: Jaso
authors.forename: Ignacio
authors.initials: I
authors.lastname: Aldana
authors.forename: Antonio
authors.initials: A
authors.lastname: Monge
mesh_terms: D000818:Animals; D000995:Antitubercular Agents / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D002470:Cell Survival / Q000187:drug effects; D002522:Chlorocebus aethiops; D008264:Macrophages / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D009570:Nitriles / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D013329:Structure-Activity Relationship; D014709:Vero Cells
chemical_list: D000995:Antitubercular Agents; D009570:Nitriles; D011810:Quinoxalines; C449921:quinoxaline-2-carbonitrile 1,4-di-N-oxide