Design, synthesis and biological evaluation of potential antibacterial butyrolactones
作者:Alaa Sweidan、Marylene Chollet-Krugler、Pierre van de Weghe、Ali Chokr、Sophie Tomasi、Martine Bonnaure-Mallet、Latifa Bousarghin
DOI:10.1016/j.bmc.2016.09.040
日期:2016.11
Novel butyrolactone analogues were designed and synthesized based on the known lichen antibacterial compounds, lichesterinic acids (B-10 and B-11), by substituting different functional groups on the butyrolactone ring trying to enhance its activity. All synthesized butyrolactone analogues were evaluated for their in vitro antibacterial activity against Streptococcus gordonii. Among the derivatives
通过取代丁内酯环上的不同官能团以增强其活性,基于已知的地衣抗菌化合物Lichesterinic acid(B-10和B-11)设计和合成新型丁内酯类似物。评估所有合成的丁内酯类似物的体外对戈登链球菌的抗菌活性。在衍生物中,B-12和B-13MIC最低,为9.38μg/ mL,已证明具有比参考抗生素强力霉素强2至3倍的杀菌力。然后通过MTT和LDH分析检测了这两种化合物对人牙龈上皮细胞系Ca9-22和巨噬细胞THP-1的细胞毒性,证实了它们对被测细胞系的安全性。对结构-活性关系的初步研究表明,C 4位的官能团对抗菌活性具有重要影响。在C 5位的烷基链的最佳长度具有最佳的抑菌活性,但是随着其长度的增加,杀菌效果也随之增强。此效率是通过C处的羧基取代来实现的4位表明由这两个取代基可能参与其作用机理的重要双重作用。