A series of N-substituted 3-amino-5-thiocarbamoyl-2-pyrazinecarboxamides was prepared. The structure of compounds was confirmed by elemental analysis, IR and 1H NMR spectra. The results of in vitro antifugal and antimycobacterial susceptibility testing shown no activity against pathogenic fungi and some effect on mycobacteria. The highest antituberculotic activity (MIC within 25-50 mg ml-1) against Mycobacterium tuberculosis and other mycobacterial strains in this series was shown by 3-(3-hydroxyphenylamino)-5-thiocarbamoyl-2-pyrazinecarboxamide. The antituberculotic activity of these compounds is mostly influenced by the presence of the thioamide moiety.
制备了一系列N取代的3-氨基-5-硫代氨基甲酰基-2-吡嗪羧酰胺。通过元素分析,红外光谱和1H NMR光谱确认了化合物的结构。体外抗真菌和抗结核杆菌敏感性试验结果表明,这些化合物对病原真菌没有活性,对结核分枝杆菌有一定的作用。在这个系列中,对结核分枝杆菌和其他分枝杆菌菌株的最高抗结核活性(最小抑菌浓度在25-50 mg ml-1之间)是由3-(3-羟基苯氨基)-5-硫代氨基甲酰基-2-吡嗪羧酰胺表现出来的。这些化合物的抗结核活性主要受硫代酰胺基团的影响。