Monocyclic <b>β</b>-lactam and unexpected oxazinone formation: synthesis, crystal structure, docking studies and antibacterial evaluation
作者:Babita Aneja、Mohammad Irfan、Md. Imtaiyaz Hassan、Amresh Prakash、Umesh Yadava、Constantin G. Daniliuc、Md. Zafaryab、M. Moshahid A. Rizvi、Amir Azam、Mohammad Abid
DOI:10.3109/14756366.2015.1058257
日期:2016.9.2
Novel monocyclic β-lactam derivatives bearing aryl, phenyl and heterocyclic rings were synthesized as possible antibacterial agents. Cyclization of imines (3h, 3t) with phenylacetic acid in the presence of phosphoryl chloride and triethyl amine did not afford the expected β-lactams. Instead, highly substituted 1,3-oxazin-4-ones (4h, 4t) were isolated as the only product and confirmed by single crystal
合成了带有芳基,苯基和杂环的新型单环β-内酰胺衍生物,作为可能的抗菌剂。在磷酰氯和三乙胺的存在下,用苯乙酸将亚胺(3h,3t)环化没有得到预期的β-内酰胺。取而代之的是,分离出高度取代的1,3-恶嗪-4-酮(4h,4t)作为唯一产物,并通过对4t的单晶X射线分析进行确认。抗菌活性结果表明,化合物4l对肺炎克雷伯菌具有很强的抗菌活性,MIC和MBC值为62.5 µg / mL。对中国仓鼠卵巢(CHO)细胞系的细胞毒性测定表明,浓度高达200μg/ mL的化合物4d,4h,4k和4l无细胞毒性。用青霉素结合蛋白-5对化合物4l进行分子对接以鉴定相互作用的性质。计算机和体外评估的结果都为化合物4l作为潜在的先导分子携带在抗细菌感染的药物开发流程中提供了基础。