A series of isonicotinyl hydrazones and their 4-thiazolidinones have been synthesized by condensation of isonicotinic acid hydrazide with various aromatic aldehydes to yield Schiff's bases, followed by the cyclocondensation of Schiff's bases with 2-mercaptoacetic acid to yield their 4-thiazolidinones. The synthesized compounds have been characterized by their elemental, analytical and spectral studies. All these compounds were evaluated for their invitro antimicrobial activity against a spectrum of non-resistant and resistant microbial organisms. These studies proved that compounds 5e,i against B. subtilis; 5e,f,h against B. anthracis; 5g,i against S. aureus showed good activity at lower concentrations. Compounds 5d-5i displayed significant activity against resistant strain of K. pneumonia with minimum inhibitory potency in the concentration range of 2-16 ug/ml.
通过
异烟酸酰
肼与各种芳香醛缩合生成席夫碱,然后席夫碱与2-
巯基乙酸环缩合生成4-
噻唑烷酮,合成了一系列异烟酰腙及其4-
噻唑烷酮。合成的化合物已通过元素、分析和光谱研究进行了表征。所有这些化合物都针对一系列非耐药和耐药微
生物的体外抗菌活性进行了评估。这些研究证明化合物5e、i具有抗
枯草芽孢杆菌的作用; 5e,f,h 对抗
炭疽芽孢杆菌; 5g,i 在较低浓度下对
金黄色葡萄球菌表现出良好的活性。化合物5d-5i对肺炎克雷伯菌耐药菌株表现出显着的活性,在2-16ug/ml的浓度范围内具有最小抑制效力。