N-Substituted 2-Isonicotinoylhydrazinecarboxamides — New Antimycobacterial Active Molecules
作者:Zuzana Rychtarčíková、Martin Krátký、Martin Gazvoda、Markéta Komlóová、Slovenko Polanc、Marijan Kočevar、Jiřina Stolaříková、Jarmila Vinšová
DOI:10.3390/molecules19043851
日期:——
This report presents a new modification of the isoniazid (INH) structure linked with different anilines via a carbonyl group obtained by two synthetic procedures and with N-substituted 5-(pyridine-4-yl)-1,3,4-oxadiazole-2-amines prepared by their cyclisation. All synthesised derivatives were characterised by IR, NMR, MS and elemental analyses and were evaluated in vitro for their antimycobacterial activity against Mycobacterium tuberculosis H37Rv, Mycobacterium avium 330/88, Mycobacterium kansasii 235/80 and one clinical isolated strain of M. kansasii 6509/96. 2-Isonicotinoyl-N-(4-octylphenyl)hydrazinecarboxamide displayed an in vitro efficacy comparable to that of INH for M. tuberculosis with minimum inhibitory concentrations (MICs) of 1–2 μM. Among the halogenated derivatives, the best anti-tuberculosis activity was found for 2-isonicotinoyl-N-(2,4,6-trichlorophenyl)hydrazinecarboxamide (MIC = 4 μM). In silico modelling on the enoyl-acyl carrier protein reductase InhA confirmed that longer alkyl substituents are advantageous for the interactions and affinity to InhA. Most of the hydrazinecarboxamides, especially those derived from 4-alkylanilines, exhibited significant activity against INH-resistant nontuberculous mycobacteria.
本报告介绍了一种新的异烟肼(INH)结构修饰,通过两种合成方法获得的羰基与不同的苯胺连接,并制备了通过它们的环化合成的N-取代的5-(吡啶-4-基)-1,3,4-噁二唑-2-胺。所有合成的衍生物均通过IR、NMR、MS和元素分析进行了表征,并在体外评估了它们对结核分枝杆菌H37Rv、鸟分枝杆菌330/88、堪萨斯分枝杆菌235/80和一种临床分离的堪萨斯分枝杆菌6509/96的抗分枝杆菌活性。2-异烟酰基-N-(4-辛基苯基)酰肼羰酰胺在体外对结核分枝杆菌的疗效与INH相当,最低抑制浓度(MICs)为1-2 μM。在卤代衍生物中,2-异烟酰基-N-(2,4,6-三氯苯基)酰肼羰酰胺显示出最佳的抗结核活性(MIC = 4 μM)。对烯酰基酰基载体蛋白还原酶InhA的计算机模拟证实,较长的烷基取代基有利于与InhA的相互作用和亲和力。大多数酰肼羰酰胺,特别是那些源自4-烷基苯胺的衍生物,对耐INH的非结核分枝杆菌显示出显著的活性。