Development of thieno- and benzopyrimidinone inhibitors of the Hedgehog signaling pathway reveals PDE4-dependent and PDE4-independent mechanisms of action
摘要:
From a high content in vivo screen for modulators of developmental patterning in embryonic zebrafish, we previously identified eggmanone (EGM1, 3) as a Hedgehog (Hh) signaling inhibitor functioning downstream of Smoothened. Phenotypic optimization studies for in vitro probe development utilizing a Gli transcription-linked stable luciferase reporter cell line identified EGM1 analogs with improved potency and aqueous solubility. Mechanistic profiling of optimized analogs indicated two distinct scaffold clusters: PDE4 inhibitors able to inhibit downstream of Sufu, and PDE4-independent Hh inhibitors functioning between Smo and Sufu. Each class represents valuable in vitro probes for elucidating the complex mechanisms of Hh regulation. Published by Elsevier Ltd.
The present invention is directed to compounds of Formulae (I), (IIa-IIh), (IIIa-IIIe), (IVa-IVc), (Va-V1), (VIa-VII), (VII), (VIII) and (IX), pharmaceutical compositions thereof and methods of use thereof in the treatment of conditions associated with a dysfunction in proteostasis.
Discovery of <i>N</i>-(3-Carbamoyl-5,5,7,7-tetramethyl-5,7-dihydro-4<i>H</i>-thieno[2,3-<i>c</i>]pyran-2-yl)-l<i>H</i>-pyrazole-5-carboxamide (GLPG1837), a Novel Potentiator Which Can Open Class III Mutant Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Channels to a High Extent
作者:Steven E. Van der Plas、Hans Kelgtermans、Tom De Munck、Sébastien L. X. Martina、Sébastien Dropsit、Evelyne Quinton、Ann De Blieck、Caroline Joannesse、Linda Tomaskovic、Mia Jans、Thierry Christophe、Ellen van der Aar、Monica Borgonovi、Luc Nelles、Maarten Gees、Pieter Stouten、Jan Van Der Schueren、Oscar Mammoliti、Katja Conrath、Martin Andrews
DOI:10.1021/acs.jmedchem.7b01288
日期:2018.2.22
Cystic fibrosis (CF) is caused by mutations in the gene for the cystic fibrosis transmembrane conductance regulator (CFTR). With the discovery of Ivacaftor and Orkambi, it has been shown that CFTR function can be partially restored by administering one or more small molecules. These molecules aim at either enhancing the amount of CFTR on the cell surface (correctors) or at improving the gating function of the CFTR channel (potentiators). Here we describe the discovery of a novel potentiator GLPG1837, which shows enhanced efficacy on CFTR mutants harboring class III mutations compared to Ivacaftor, the first marketed potentiator. The optimization of potency, efficacy, and pharmacokinetic profile will be described.
The structural modification and biological evaluation of tetrahydrothienopyridine derivatives as selective BChE inhibitors