Ester- and amide-containing multiQACs: Exploring multicationic soft antimicrobial agents
作者:Ryan A. Allen、Megan C. Jennings、Myles A. Mitchell、Saleh E. Al-Khalifa、William M. Wuest、Kevin P.C. Minbiole
DOI:10.1016/j.bmcl.2017.03.077
日期:2017.5
on both ester and amide linkages, in a systematic study of mono-, bis-, and tris-cationic QAC species. Antimicrobial activity, red blood cell lysis, and chemical stability were assessed. Antiseptic activity was strong against a panel of six bacteria including two MRSA strains, with low micromolar activity seen in many compounds; amide analogs showed superior activity over ester analogs, with one bisQAC
季铵化合物 (QAC) 是无处不在的防腐剂,其化学稳定性既有助于延长抗菌活性,又有助于保护环境。软抗菌剂,如 QAC 旨在在相对较短的时间内分解,显示出有效杀死细菌但不会留下持久足迹的希望。在对单、双和三阳离子 QAC 种类的系统研究中,我们设计并制备了 40 种基于酯键和酰胺键的软 QAC 化合物。评估了抗菌活性、红细胞裂解和化学稳定性。对一组六种细菌(包括两种 MRSA 菌株)的抗菌活性很强,许多化合物的微摩尔活性很低;酰胺类似物显示出优于酯类似物的活性,一种 bisQAC 的平均 MIC 活性约为 1μM。