[1,2,4]Triazolo[4,3-a]phthalazines: Inhibitors of Diverse Bromodomains
摘要:
Bromodomains are gaining increasing interest as drug targets. Commercially sourced and de novo synthesized substituted [1,2,4]triazolo[4,3-a]phthalazines are potent inhibitors of both the BET bromodomains such as BRD4 as well as bromodomains outside the BET family such as BRD9, CECR2, and CREBBP. This new series of compounds. is the first example of submicromolar inhibitors of bromodomains outside the BET subfamily. Representative compounds are active in cells exhibiting potent cellular inhibition activity in a FRAP model of CREBBP and chromatin association. The compounds described are valuable starting points for discovery of selective bromodomain inhibitors and inhibitors with mixed bromodomain pharmacology.
Identification, Characterization, and Optimization of 2,8-Disubstituted-1,5-naphthyridines as Novel <i>Plasmodium falciparum</i> Phosphatidylinositol-4-kinase Inhibitors with in Vivo Efficacy in a Humanized Mouse Model of Malaria
作者:Nishanth Kandepedu、Diego Gonzàlez Cabrera、Srinivas Eedubilli、Dale Taylor、Christel Brunschwig、Liezl Gibhard、Mathew Njoroge、Nina Lawrence、Tanya Paquet、Charles J. Eyermann、Thomas Spangenberg、Gregory S. Basarab、Leslie J. Street、Kelly Chibale
DOI:10.1021/acs.jmedchem.8b00648
日期:2018.7.12
A novel 2,8-disubstituted-1,5-naphthyridine hit compound stemming from the open access Medicines for Malaria Venture Pathogen Box formed a basis for a hit-to-lead medicinal chemistry program. Structure-activity relationship investigations resulted in compounds with potent antiplasmodial activity against both chloroquine sensitive (NF54) and multidrug resistant (K1) strains of the human malaria parasite Plasmodium falciparum. In the humanized P. falciparum mouse efficacy model, one of the frontrunner compounds showed in vivo efficacy at an oral dose of 4 X 50 mg.g(-1). In vitro mode-of-action studies revealed Plasmodium falciparum phosphatidylinositol-4-kinase as the target.