New lipophilic isoniazid derivatives and their 1,3,4-oxadiazole analogues: Synthesis, antimycobacterial activity and investigation of their mechanism of action
作者:Rudolf Vosátka、Martin Krátký、Markéta Švarcová、Jiří Janoušek、Jiřina Stolaříková、Jan Madacki、Stanislav Huszár、Katarína Mikušová、Jana Korduláková、František Trejtnar、Jarmila Vinšová
DOI:10.1016/j.ejmech.2018.04.017
日期:2018.5
NTM (MICs ≥4 μM). Their cyclization to 1,3,4-oxadiazoles did not increase the activity. The experimentally proved mechanism of action of 2-isonicotinoylhydrazine-1-carboxamides consists of the inhibition of enoyl-ACP reductase (InhA) in a way similar to INH, which is blocking the biosynthesis of mycolic acids. N-Dodecyl-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine as the most efficacious oxadiazole inhibits
新药的开发对于将来治疗结核病和其他分枝杆菌感染至关重要。从异烟肼(INH)合成了一系列N-烷基-2-异烟碱基肼-1-羧酰胺,然后环化为N-烷基-5-(吡啶-4-基)-1,3,4-恶二唑-2-胺。所有衍生物均经光谱表征。筛选了化合物对易感和耐多药结核分枝杆菌(Mtb。)和非结核分枝杆菌(NTM;鸟分枝杆菌(M. avium),堪萨斯分枝杆菌(M. kansasii))的体外抗分枝杆菌活性。活性最高的羧酰胺被短n取代-烷基,其活性与INH相当,对Mtb的最小抑制浓度(MIC)。为0.5–2μM。此外,它们对HepG2无毒,其中一些对耐INH的NTM(MIC≥4μM)具有高活性。它们环化成1,3,4-恶二唑并没有增加活性。实验证明,2-异烟酰胺基肼-1-羧酰胺的作用机理包括以与INH类似的方式抑制烯酰-ACP还原酶(InhA),这会阻止霉菌酸的生物合成。N-十二烷基-5-(吡啶-4-基)-1,3