Synthesis and biological activities of triazole derivatives as inhibitors of InhA and antituberculosis agents
摘要:
InhA, the enoyl reductase from the mycobacterial type II fatty acid biosynthesis pathway, is a target for the development of novel drugs against tuberculosis. We exploited copper-catalyzed [3+2] cycloaddition between alkynes and different azides to afford 1,4-disubstituted triazole or alpha-ketotriazole derivatives. Several compounds bearing a lipophilic chain mimicking the substrate were able to inhibit InhA. Among them, 1-dodecyl-4-phenethyl-1H-1,2,3-triazole displayed a minimum inhibitory concentration inferior to 2 mu g/mL against Mycobacterium tuberculosis H37Rv. (C) 2011 Elsevier Masson SAS. All rights reserved.
The catalytic oxidation of α-ketotriazoles to α,β-diketotriazoles was performed with CuCl2 or CuI/2,9-dimethyl-1,10-phenanthroline in air at 80 °C in good yields. Studies showed that the triazole group participates in complexation to the copper and favors oxidation.
InhA, the enoyl reductase from the mycobacterial type II fatty acid biosynthesis pathway, is a target for the development of novel drugs against tuberculosis. We exploited copper-catalyzed [3+2] cycloaddition between alkynes and different azides to afford 1,4-disubstituted triazole or alpha-ketotriazole derivatives. Several compounds bearing a lipophilic chain mimicking the substrate were able to inhibit InhA. Among them, 1-dodecyl-4-phenethyl-1H-1,2,3-triazole displayed a minimum inhibitory concentration inferior to 2 mu g/mL against Mycobacterium tuberculosis H37Rv. (C) 2011 Elsevier Masson SAS. All rights reserved.
Synthesis and evaluation of α-ketotriazoles and α,β-diketotriazoles as inhibitors of Mycobacterium tuberculosis
作者:Christophe Menendez、Frédéric Rodriguez、Ana Luisa de Jesus Lopes Ribeiro、Francesca Zara、Céline Frongia、Valérie Lobjois、Nathalie Saffon、Maria Rosalia Pasca、Christian Lherbet、Michel Baltas
DOI:10.1016/j.ejmech.2013.06.042
日期:2013.11
Two series of alpha-ketotriazole and alpha,beta-diketotriazole derivatives were synthesized and evaluated for antitubercular and cytotoxic activities. Among them, two alpha,beta-diketotriazole compounds, 6b and 9b, exhibited good activities (minimum inhibitory concentration = 7.6 mu M and 6.9 mu M, respectively) on Mycobacterium tuberculosis and multi-drug resistant M. tuberculosis strains and presented no cytotoxicity (IC50 > 50 mu M) on colorectal cancer HCT116 and normal fibroblast GM637H cell lines. These two compounds represent promising leads for further optimization. (C) 2013 Elsevier Masson SAS. All rights reserved.