Antibacterial activity and mechanism of action of the benzazole acrylonitrile-based compounds: In vitro , spectroscopic, and docking studies
作者:Shaikha S. AlNeyadi、Alaa A. Salem、Mohammad A. Ghattas、Noor Atatreh、Ibrahim M. Abdou
DOI:10.1016/j.ejmech.2017.05.010
日期:2017.8
A new series of pyrimidine derivatives 5, 9a-d and 12a-d was synthesized by an efficient procedure. The antibacterial activity of the new compounds was studied against four bacterial strains. Compound 5 was found to exhibit the highest potency, with = 1.0 μg/ml, against both Escherichia coli and Pseudomonas aeruginosa when compared with amoxicillin (MIC = 1.0–1.5 μg/mL). Transmission electron microscope
通过有效的方法合成了一系列新的嘧啶衍生物5、9a-d和12a-d。研究了新化合物对四种细菌菌株的抗菌活性。与阿莫西林相比,发现化合物5对大肠杆菌和铜绿假单胞菌均显示出最高的效价,为1.0μg/ ml (MIC = 1.0–1.5μg/ mL)。透射电子显微镜的结果证实,抗细菌活性是通过细胞壁破裂而发生的。分子建模结果表明化合物5、9a-d和12a-d具有在活性位点不可逆地与青霉素结合蛋白(PBP)Ser62残基结合的潜力,并能够通过抑制β-内酰胺酶克服细菌对阿莫西林的耐药性。对接研究表明,化合物5、9a -d和12a-d通过与Ser70共价结合来抑制β-内酰胺酶。研究了与阿莫西林的协同作用。在这项研究中报道的新合成的化合物值得进一步考虑作为预期的抗菌剂。