Comparative study between the anti-P. falciparum activity of triazolopyrimidine, pyrazolopyrimidine and quinoline derivatives and the identification of new PfDHODH inhibitors
作者:Flávia F. Silveira、Juliana O. de Souza、Lucas V.B. Hoelz、Vinícius R. Campos、Valquíria A.P. Jabor、Anna C.C. Aguiar、M. Cristina Nonato、Magaly G. Albuquerque、Rafael V.C. Guido、Nubia Boechat、Luiz C.S. Pinheiro
DOI:10.1016/j.ejmech.2020.112941
日期:2021.1
pyrazolopyrimidine and quinoline derivatives as P. falciparum inhibitors (3D7 strain). Thirty compounds exhibited anti-P. falciparum activity, with IC50 values ranging from 0.030 to 9.1 μM. The [1,2,4]triazolo[1,5-a]pyrimidine derivatives were more potent than the pyrazolo[1,5-a]pyrimidine and quinoline analogues. Compounds 20, 21, 23 and 24 were the most potent inhibitors, with IC50 values in the range of 0.030
在这项工作中,我们设计并合成了35种新的三唑并嘧啶,吡唑并嘧啶和喹啉衍生物作为恶性疟原虫抑制剂(3D7株)。三十种化合物表现出抗恶性疟原虫活性,IC 50值范围为0.030至9.1μM。[1,2,4]三唑并[1,5- a ]嘧啶衍生物比吡唑并[1,5- a ]嘧啶和喹啉类似物更有效。化合物20,21,23和24是最有效的抑制剂,具有IC 50值在0.030-0.086μM范围内,与氯喹等效。此外,这些化合物具有选择性,对人肝癌细胞系HepG2没有细胞毒活性。所有的[1,2,4]三唑并[1,5- a ]嘧啶衍生物均在低微摩尔至低纳摩尔范围(IC 50值为0.08-1.3μM)内抑制Pf DHODH活性,并且未显示出对Hs DHODH的明显抑制作用同源物(50μM时为0-30%)。分子对接研究表明[1,2,4]三唑并[1,5- a ]嘧啶衍生物与Pf DHODH的结合方式,与Pf DHODH酶