作者:Mazen Almehmadi、Mustafa Halawi、Mohammad Asif
DOI:10.1007/s11094-022-02662-7
日期:2022.7
Some pyrazinamide derivatives (2a-2e, 2a′-2e′, and 2a″-2e″) were synthesized and evaluated as antimycobacterial agents against Mycobacterium tuberculosis H37Rv strain. These derivatives were designed by structural modification of pyrazinamide with alkyl chains and six-membered hetereocylic rings, respectively. The title compounds were synthesized using pyrazinamide as the starting material for haloakylation (1a-1c), and then halo-alkylpyrazinamides were reacted with appropriate heterocyclic rings. The structures of compounds were confirmed by 1H NMR, 13C NMR, mass spectroscopy, and elemental analysis. The activity of pyrazinamide derivatives was assayed using microplate alamar blue assay (MABA) and characterized by minimum inhibitory concentrations (MICs). Results showed that the obtained pyrazinamide derivatives exhibited high inhibitory effect on M. tuberculosis. The antimycobacterial activity of compounds 2b′, 2d′, and 2e′ was the best among all compounds tested, and their MIC values were about 6.25 mμ/mL. These compounds have ethylene chain between pyrazinamide moiety and six-membered hetereocylic rings.
一些吡嗪酰胺衍生物(2a-2e、2a′-2e′和2a″-2e″)被合成并作为抗结核分枝杆菌H37Rv菌株的抗分枝杆菌药物进行了评估。这些衍生物是通过分别用烷基链和六元杂环对吡嗪酰胺进行结构修饰而设计的。标题化合物以吡嗪酰胺为起始原料,通过卤代烷基化反应(1a-1c)合成,然后将卤代烷基吡嗪酰胺与适当的杂环反应。化合物的结构通过1H NMR、13C NMR、质谱和元素分析进行了确认。吡嗪酰胺衍生物的活性通过微孔板alamar blue检测(MABA)进行了测定,并通过最小抑菌浓度(MIC)进行了表征。结果表明,所获得的吡嗪酰胺衍生物对结核分枝杆菌具有很高的抑制作用。在测试的所有化合物中,化合物2b′、2d′和2e′的抗分枝杆菌活性最好,其MIC值约为6.25 mμ/mL。这些化合物在吡嗪酰胺部分和六元杂环之间具有乙烯链。