Design, synthesis, antibacterial activity and toxicity of novel quaternary ammonium compounds based on pyridoxine and fatty acids
作者:Sergey V. Sapozhnikov、Alina E. Sabirova、Nikita V. Shtyrlin、Anastasia Y. Druk、Mariya N. Agafonova、Milana N. Chirkova、Renata R. Kazakova、Denis Y. Grishaev、Tatyana V. Nikishova、Elena S. Krylova、Elena V. Nikitina、Airat R. Kayumov、Yurii G. Shtyrlin
DOI:10.1016/j.ejmech.2020.113100
日期:2021.2
membrane suggesting that the membrane is an apparent molecular target of compounds. 6i and 12a were non mutagenic neither in SOS-chromotest nor in Ames test and non-toxic in vivo at acute oral (LD50 > 2000 mg/kg) and cutaneous administration (LD50 >2500 mg/kg) on mice. Taken together, our data allow suggesting the described active compounds as promising starting point for the new antibacterial agents development
设计了一系列基于季铵吡ido醇衍生物的43种新颖的“软抗菌剂”,其中包括吡soft醇的六元缩醛和缩酮,它们通过可裂解的连接基部分(酰胺,酯)与脂肪羧酸的片段结合。九种化合物对革兰氏阳性和革兰氏阴性细菌菌株具有体外有望的抗菌活性,其MIC值可与参考防腐剂miramistin,苯扎氯铵和氯己定相比。在各种临床分离株上,先导化合物6i和12a表现出与苯扎氯铵相当的抗菌活性,但比miramistin高。此外,6i和12a能够杀死嵌入单物种和双物种生物膜基质中的细菌。用6i和12a处理细菌细胞会导致膜快速去极化,表明该膜是化合物的明显分子靶标。6i和12a在SOS-chromotest和Ames试验中均无致突变性,并且在小鼠急性口服(LD 50 > 2000 mg / kg)和经皮给药(LD 50 > 2500 mg / kg)时体内无毒。综上所述,我们的数据可以表明所描述的活性化合物是新抗菌剂开发的有希望的起点。