Discovery of Marinoquinolines as Potent and Fast-Acting <i>Plasmodium falciparum</i> Inhibitors with in Vivo Activity
作者:Anna Caroline Campos Aguiar、Michele Panciera、Eric Francisco Simão dos Santos、Maneesh Kumar Singh、Mariana Lopes Garcia、Guilherme Eduardo de Souza、Myna Nakabashi、José Luiz Costa、Célia R. S. Garcia、Glaucius Oliva、Carlos Roque Duarte Correia、Rafael Victorio Carvalho Guido
DOI:10.1021/acs.jmedchem.8b00143
日期:2018.7.12
We report the discovery of marinoquinoline (3H-pyrrolo[2,3-c]quinoline) derivatives as new chemotypes with antiplasmodial activity. We evaluated their inhibitory activities against P. falciparum and conducted a structure–activity relationship study, focusing on improving their potency and maintaining low cytotoxicity. Next, we devised quantitative structure–activity relationship (QSAR) models, which
我们报告了marinoquinoline(3 H -pyrrolo [2,3- c ] quinoline)衍生物作为具有抗血浆活性的新化学型的发现。我们评估了它们对恶性疟原虫的抑制活性,并进行了结构-活性关系研究,重点是提高其效力并保持低细胞毒性。接下来,我们设计了定量结构-活性关系(QSAR)模型,该模型经过前瞻性验证,以发现具有增强效价的新类似物。最有效的化合物50(IC 50 3d7 = 39 nM; IC 50 K1= 41 nM),是一种具有双阶段(血液和肝脏)活性的速效抑制剂。该化合物显示出相当高的选择性(SI> 6410),与青蒿琥酯组合使用时具有累加作用,对小鼠具有出色的耐受性(所有小鼠在口服1000 mg / kg剂量后均存活)和50 mg / kg的口服功效在伯氏疟原虫疟疾的小鼠模型中(感染后第5天寄生虫病减少62%);因此,化合物50被认为是发现新抗疟药的主要化合物。