Identification of 2,4-Disubstituted Imidazopyridines as Hemozoin Formation Inhibitors with Fast-Killing Kinetics and <i>In Vivo</i> Efficacy in the <i>Plasmodium falciparum</i> NSG Mouse Model
作者:André Horatscheck、Ana Andrijevic、Aloysius T. Nchinda、Claire Le Manach、Tanya Paquet、Lutete Peguy Khonde、Jean Dam、Kailash Pawar、Dale Taylor、Nina Lawrence、Christel Brunschwig、Liezl Gibhard、Mathew Njoroge、Janette Reader、Mariëtte van der Watt、Kathryn Wicht、Ana Carolina C. de Sousa、John Okombo、Keletso Maepa、Timothy J. Egan、Lyn-Marie Birkholtz、Gregory S. Basarab、Sergio Wittlin、Paul V. Fish、Leslie J. Street、James Duffy、Kelly Chibale
DOI:10.1021/acs.jmedchem.0c01411
日期:2020.11.12
cardiotoxicity and were addressed through structure–activity and structure–property relationship studies. Pharmacokinetic properties were assessed in mice for compounds showing desirable in vitro activity, a selectivity window over cytotoxicity, and microsomal metabolic stability. Frontrunner compound 37 showed good exposure in mice combined with good in vitro activity against the malaria parasite, which translated
一系列 2,4-二取代咪唑并吡啶源自 SoftFocus 激酶文库,是从针对人类疟疾寄生虫恶性疟原虫的高通量表型筛选中鉴定出来的。命中化合物显示出中等的无性血阶段活性。在先导优化过程中,标记了几个问题,例如对多重耐药 K1 菌株的交叉耐药性、体外细胞毒性和心脏毒性,并通过结构-活性和结构-性质关系研究得到解决。在小鼠中评估了化合物的药代动力学特性,这些化合物显示出理想的体外活性、细胞毒性的选择性窗口和微粒体代谢稳定性。领跑者化合物37在小鼠中显示出良好的暴露,并结合良好的体外抗疟原虫活性,这在恶性疟原虫NOD -scid IL-2Rγ无效(NSG)小鼠模型中转化为体内功效。初步机理研究表明抑制血红素形成是一种促成作用方式。