Synthesis and structure–activity relationship of amidine derivatives of 3,4-ethylenedioxythiophene as novel antibacterial agents
作者:Ivana Stolić、Hana Čipčić Paljetak、Mihaela Perić、Mario Matijašić、Višnja Stepanić、Donatella Verbanac、Miroslav Bajić
DOI:10.1016/j.ejmech.2014.11.003
日期:2015.1
Current antibacterial chemotherapeutics are facing an alarming increase in bacterial resistance pressuring the search for novel agents that would expand the available therapeutic arsenal against resistant bacterial pathogens. In line with these efforts, a series of 9 amidine derivatives of 3,4-ethylenedioxythiophene were synthesized and, together with 18 previously synthesized analogs, evaluated for
当前的抗菌化学疗法正面临着令人惊讶的细菌耐药性增加,这促使人们寻找新型药物,以扩大可利用的治疗性武器库来抵抗耐药细菌病原体。根据这些努力,合成了一系列的9种3,4-亚乙二氧基噻吩的am衍生物,并与18种先前合成的类似物一起评估了它们的相对DNA结合亲和力,体外抗菌活性和体外初步研究安全档案。观察到了一些令人鼓舞的am衍生物的亚类对革兰氏阳性菌(包括耐药性MRSA,MRSE,VRE菌株)和革兰氏阴性菌的抗菌活性。双苯基衍生物具有最大的抗菌活性,而双苯并咪唑类化合物19的活性谱最广(MIC为4、2、0.5和≤0.25μg/ ml,对金黄色葡萄球菌,肺炎链球菌,化脓性链球菌,卡他莫拉菌和对敏感和耐药金黄色葡萄球菌,表皮葡萄球菌和粪肠球菌的临床分离株分别为4-32μg/ ml),并显示出最强的DNA结合亲和力(ΔT m为15.4°C)。通常,不对称设计的化合物和羧酰胺-的活性较低。分子对接表明3,