Synthesis and Antibacterial Activity of Cinnamaldehyde Acylhydrazone with a 1,4-Benzodioxan Fragment as a Novel Class of Potent β-Ketoacyl–Acyl Carrier Protein Synthase III (FabH) Inhibitor
作者:Xiaoda Song、Yushun Yang、Jing Zhao、Yangjian Chen
DOI:10.1248/cpb.c14-00485
日期:——
Fatty acid biosynthesis is essential for bacterial survival. β-Ketoacyl–acyl carrier protein (ACP) synthase III (FabH), is a particularly attractive antibacterial target, since it is central to the initiation of fatty acid biosynthesis. Three series of 21 cinnamaldehyde acylhydrazone derivatives, A3–9, B3–9, and C3–9, were synthesized and evaluated for FabH-inhibitory activity. Compound B6 showed the most potent biological activity against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis (minimum inhibitory concentrations (MICs) values: 1.56–3.13 µg/mL) and was comparable with the positive control. Docking simulation by positioning compound B6 in the FabH structure active site was performed to explore the possible binding model.
脂肪酸生物合成对细菌的生存至关重要。β-酮酰基载体蛋白(ACP)合成酶III(FabH)因其在脂肪酸生物合成启动中的核心作用,是一个特别有吸引力的抗菌目标。合成了三系列共21种肉桂醛酰腙衍生物A3-9、B3-9和C3-9,并评估了它们对FabH的抑制活性。化合物B6显示出对大肠杆菌、绿脓杆菌、金黄色葡萄球菌和枯草芽孢杆菌最强的生物活性(最低抑制浓度(MICs)值为1.56-3.13 µg/mL),与阳性对照相当。通过将化合物B6定位在FabH结构活性位点的对接模拟,探索了可能的结合模型。