作者:Basmah Almohaywi、Tsz Tin Yu、George Iskander、Daniel S.H. Chan、Kitty K.K. Ho、Scott Rice、David StC. Black、Renate Griffith、Naresh Kumar
DOI:10.1016/j.bmcl.2019.03.004
日期:2019.5
through quorum sensing (QS), which is an intercellular communication system mediated by the binding of signaling molecules to QS receptors such as LasR. In this study, a range of dihydropyrrolone (DHP) analogues were synthesized via the lactone-lactam conversion of lactone intermediates. The synthesized compounds were tested for their ability to inhibit QS, biofilm formation and bacterial growth of
细菌通过群体感应(QS)调节其致病性和生物膜形成,群体感应是一种细胞间通讯系统,通过信号分子与QS受体(例如LasR)的结合而介导。在这项研究中,通过内酯中间体的内酯-内酰胺转化合成了一系列二氢吡咯烷酮(DHP)类似物。测试了合成的化合物抑制铜绿假单胞菌的QS,生物膜形成和细菌生长的能力。这些化合物也停靠在LasR晶体结构中,以合理化所观察到的结构-活性关系。在这项研究中鉴定出的最具活性的化合物是化合物9i,在31.25 µM时QS抑制率为63.1%,在250 µM时生物膜减少了60%,对细菌细胞的生长只有中等毒性。