Hit-to-lead optimization of a pyrazinylpiperazine series against Leishmania infantum and Leishmania braziliensis
作者:Thibault Joseph William Jacques Dit Lapierre、Mariza Gabriela Faleiro de Moura Lodi Cruz、Nícolas Peterson Ferreira Brito、Daniela de Melo Resende、Felipe de Oliveira Souza、Eduardo Jorge Pilau、Meryck Felipe Brito da Silva、Bruno Junior Neves、Silvane Maria Fonseca Murta、Celso de Oliveira Rezende Júnior
DOI:10.1016/j.ejmech.2023.115445
日期:2023.8
An early hit-to-lead optimization of a novel pyrazinylpiperazine series against L. infantum and L. braziliensis has been performed after an extensive SAR focusing on the benzoyl fragment of hit (4). Deletion of the meta-Cl of (4) led to the obtention of the para-hydroxyl derivative (12), on which the design of most monosubstituted derivatives of the SAR was based. Further optimization of the series
在针对命中的苯甲酰片段进行广泛的 SAR 后,针对L. infantum和L. braziliensis对新型吡嗪基哌嗪系列进行了早期命中至先导优化( 4 )。删除( 4 ) 的间位-Cl导致获得对位羟基衍生物 ( 12 ),SAR 的大多数单取代衍生物的设计均基于此。该系列的进一步优化,涉及双取代的苯甲酰基片段和 ( 12 )的羟基取代基,允许获得总共 15 种抗利什曼原虫效力增强的化合物 (IC 50 < 10 μM),其中九个在低微摩尔范围内显示活性 (IC 50 < 5 μM)。该优化最终确定了邻位、间位二羟基衍生物 ( 46 ) 作为该系列的早期先导化合物(IC 50 ( L. infantum ) = 2.8 μM,IC 50 ( L. braziliensis ) = 0.2 μM)。对一些选定的化合物对其他锥虫寄生虫的额外评估表明,该系列对利什曼原虫寄生虫具有选择性,并且计算机ADMET