作者:Adam R. Benoit、Charles Schiaffo、Christine E. Salomon、John R. Goodell、Hiroshi Hiasa、David M. Ferguson
DOI:10.1016/j.bmcl.2014.05.037
日期:2014.7
A series of 9-alkylaminoacridines were synthesized and evaluated for activity against two strains of methicillin-resistant and one strain of methicillin-sensitive Staphylococcus aureus. Results are presented that show a clear structure activity relationship between the N-alkyl chain length and antibacterial activity with peak MIC99 values of 2-3 mu M for alkyl chains ranging from 10 to 14 carbons in length. Although prior work has linked the function of acridine-based compounds to intercalation and topoisomerase inhibition, the present results show that 9-alkylaminoacridines likely function as amphiphilic membrane-active disruptors potentially in a similar manner as quaternary ammonium antimicrobials. (C) 2014 Elsevier Ltd. All rights reserved.