Design, synthesis and antimicrobial activities evaluation of Schiff base derived from secnidazole derivatives as potential FabH inhibitors
作者:Yao Li、Chang-Po Zhao、Hua-Ping Ma、Meng-Yue Zhao、Ya-Rong Xue、Xiao-Ming Wang、Hai-Liang Zhu
DOI:10.1016/j.bmc.2013.03.023
日期:2013.6
antibacterial activities against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus. The compounds inhibitory assay and docking simulation indicated that compound 20 (E)-2-(2-methyl-5-nitro-1H-imidazol-1-yl)-N′-(3,4,5-trimethylbenzylidene)acetohydrazide with MIC of 3.13–6.25 μg/mL against the tested bacterial strains was a potent inhibitor of Escherichia coli FabH.
FabH,β-酮酰基-酰基载体蛋白(ACP)合酶III,对于脂肪酸生物合成的启动至关重要,并且在革兰氏阳性和革兰氏阴性细菌中高度保守。合成了一系列新的塞克硝唑衍生物(1 – 20),并通过光谱法和元素分析对其进行了全面表征。在这些化合物中,6,8,11,13,14,16 - 20报道首次。测试了这些化合物对大肠杆菌,铜绿假单胞菌,枯草芽孢杆菌的抗菌活性和金黄色葡萄球菌。化合物的抑制试验和对接模拟表明,化合物20(E)-2-(2-甲基-5-硝基-1 H-咪唑-1-基)-N' -(3,4,5-三甲基亚苄基)乙酰肼与对被测细菌菌株的MIC为3.13-6.25μg/ mL,是大肠杆菌FabH的有效抑制剂。