Antimalarial Inhibitors Targeting Serine Hydroxymethyltransferase (SHMT) with in Vivo Efficacy and Analysis of their Binding Mode Based on X-ray Cocrystal Structures
摘要:
Target-based approaches toward new antimalarial treatments are highly valuable to prevent resistance development., We report several series of pyrazolopyran-based inhibitors targeting the enzyme serine hydroxymethyltransferase (SHMT), designed to improve microsomal metabolic stability and to identify suitable candidates for in vivo efficacy evaluation. The best ligands inhibited Plasmodium falciparum (Pf) and Arabidopsis thaliana (At) SHMT in target assays and PfNF54 strains in cell-based assays with values in the low nanomolar range (3.2-55 nM). A set of carboxylate derivatives demonstrated markedly improved in vitro metabolic stability (t(1/2) > 2 h). A selected ligand showed significant in vivo efficacy with 73% of parasitemia reduction in a mouse model. Five new cocrystal structures with PvSHMT were solved at 2.3-2.6 angstrom resolution, revealing a unique water-mediated interaction with Tyr63 at the end of the para-aminobenzoate channel. They also displayed the high degree of conformational flexibility of the Cys364-loop lining this channel.
作者:Christa C. Chrovian、Akinola Soyode-Johnson、Jessica L. Wall、Jason C. Rech、Jeff Schoellerman、Brian Lord、Kevin J. Coe、Nicholas I. Carruthers、Leslie Nguyen、Xiaohui Jiang、Tatiana Koudriakova、Bartosz Balana、Michael A. Letavic
DOI:10.1021/acsmedchemlett.8b00542
日期:2019.3.14
Herein, we disclose a series of selective GluN2B negative allosteric modulators containing a 1H-pyrrolo[3,2-b]pyridine core. Lead optimization efforts included increasing brain penetration as well as decreasing cytochrome P450 inhibition and hERG channel binding. The series was also optimized to reduce metabolic turnover in human and rat. Compounds 9, 25, 30, and 34 have good in vitro GluN2B potency
[EN] SUBSTITUTED 1H-IMIDAZO[4,5-B]PYRIDIN-2(3H)-ONES AND THEIR USE AS GLUN2B RECEPTOR MODULATORS<br/>[FR] 1H-IMIDAZO[4,5-B]PYRIDIN-2(3H)-ONES SUBSTITUÉES ET LEUR UTILISATION EN TANT QUE MODULATEURS DU RÉCEPTEUR GLUN2B
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2018067786A1
公开(公告)日:2018-04-12
Substituted 1 H-imidazo[4,5-b]pyridin-2(3H)-ones as NR2B receptor ligands. Such compounds may be used in NR2B receptor modulation and in pharmaceutical compositions and methods for the treatment of disease states, disorders, and conditions mediated by NR2B receptor activity.
Design, Synthesis, and Preclinical Evaluation of 3-Methyl-6-(5-thiophenyl)-1,3-dihydro-imidazo[4,5-<i>b</i>]pyridin-2-ones as Selective GluN2B Negative Allosteric Modulators for the Treatment of Mood Disorders
作者:Christa C. Chrovian、Akinola Soyode-Johnson、Brice Stenne、Daniel J. Pippel、Jeffrey Schoellerman、Brian Lord、Alexandra S. Needham、Chungfang Xia、Kevin J. Coe、Kia Sepassi、Freddy Schoetens、Brian Scott、Leslie Nguyen、Xiaohui Jiang、Tatiana Koudriakova、Bartosz Balana、Michael A. Letavic
DOI:10.1021/acs.jmedchem.9b02113
日期:2020.9.10
Selective inhibitors of the GluN2B subunit of N-methyl-d-aspartate receptors in the ionotropic glutamate receptor superfamily have been targeted for the treatment of mood disorders. We sought to identify structurally novel, brain penetrant, GluN2B-selective inhibitors suitable for evaluation in a clinical setting in patients with major depressive disorder. We identified a new class of negative allosteric
[EN] SUBSTITUTED HETEROAROMATIC PYRAZOLO-PYRIDINES AND THEIR USE AS GLUN2B RECEPTOR MODULATORS<br/>[FR] PYRAZOLO-PYRIDINES HÉTÉROAROMATIQUES SUBSTITUÉES ET LEUR UTILISATION EN TANT QUE MODULATEURS DU RÉCEPTEUR GLUN2B
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2020249785A1
公开(公告)日:2020-12-17
Substituted Pyrazolo-pyridines as GluN2B receptor ligands. Such compounds may be used in GluN2B receptor modulation and in pharmaceutical compositions and methods for the treatment of disease states, disorders, and conditions mediated by GluN2B receptor activity.
[EN] SUBSTITUTED PYRAZOLO-PYRAZINES AND THEIR USE AS GLUN2B RECEPTOR MODULATORS<br/>[FR] PYRAZOLO-PYRAZINES SUBSTITUÉES ET LEUR UTILISATION EN TANT QUE MODULATEURS DU RÉCEPTEUR DE GLUN2B
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2020249802A1
公开(公告)日:2020-12-17
Substituted PYRAZOLO-PYRAZINES as GluN2B receptor ligands. Such compounds may be used in GluN2B receptor modulation and in pharmaceutical compositions and methods for the treatment of disease states, disorders, and conditions mediated by GluN2B receptor activity.