Attenuation of Mycobacterium species through direct and macrophage mediated pathway by unsymmetrical diaryl urea
摘要:
Tuberculosis is a major threat for mankind and the emergence of resistance strain of Mycobacterium tuberculosis (Mtb) against first line antibiotics makes it lethal for human civilization. In this study, we have synthesized different diaryl urea derivatives targeting the inhibition of mycolic acid biosynthesis. Among the 39 synthesized molecules, compounds 46, 57, 58 and 86 showed MIC values <= 10 mu g/ml against H37Rv and mc(2)6030 strains. The best molecule with a methyl at ortho position of the first aromatic ring and prenyl group at the meta position of the second aromatic ring showed the MIC value of 5.2 mu g/ml and mu g/ml against H37Rv and mc(2)6030 respectively, with mammalian cytotoxicity of 163.4 mu g/ml. The effective compounds showed selective inhibitory effect on mycolic acid (epoxy mycolate) biosynthesis in C-14-radiolabelled assay. At the same time these molecules also executed their potent immunomodulatory activity by up-regulation of IFN-gamma and IL-12 and down-regulation of IL-10. (C) 2016 Elsevier Masson SAS. All rights reserved.
Über den Umsatz aromatischer Isocyansäure-ester mit aromatischen Aminen
作者:C. Naegeli、A. Tyabji、L. Conrad
DOI:10.1002/hlca.193802101140
日期:——
1. Wenn aromatische Isocyansäure-ester mitaromatischenAminen in aromatischen Kohlenwasserstoffen sich miteinander umsetzen, so ordnen sich die Substituenten bezüglich ihres Einflusses auf die Aktivität der Isocyansäure-Gruppe in die Reihe