Scaffold-hopping identifies furano[2,3-d]pyrimidine amides as potent Notum inhibitors
摘要:
The carboxylesterase Notum is a key negative regulator of the Wnt signaling pathway by mediating the depalmitoleoylation of Wnt proteins. Our objective was to discover potent small molecule inhibitors of Notum suitable for exploring the regulation of Wnt signaling in the central nervous system. Scaffold-hopping from thienopyrimidine acids 1 and 2, supported by X-ray structure determination, identified 3-methylimidazolin-4-one amides 20-24 as potent inhibitors of Notum with activity across three orthogonal assay formats (biochemical, extra-cellular, occupancy). A preferred example 24 demonstrated good stability in mouse microsomes and plasma, and cell permeability in the MDCK-MDR1 assay albeit with modest P-gp mediated efflux. Pharmacokinetic studies with 24 were performed in vivo in mouse with single oral administration of 24 showing good plasma exposure and reasonable CNS penetration. We propose that 24 is a new chemical tool suitable for cellular studies to explore the fundamental biology of Notum.
An improved, scalable synthesis of Notum inhibitor LP-922056 using 1-chloro-1,2-benziodoxol-3-one as a superior electrophilic chlorinating agent
作者:Nicky J Willis、Elliott D Bayle、George Papageorgiou、David Steadman、Benjamin N Atkinson、William Mahy、Paul V Fish
DOI:10.3762/bjoc.15.271
日期:——
negative regulator of the Wntsignalling pathway by mediating the depalmitoleoylation of Wnt proteins. LP-922056 (1) is an orally active inhibitor of Notum. We are investigating the role of Notum in modulating Wntsignalling in the central nervous system and wished to establish if 1 would serve as a peripherally restricted control. An accessible and improved synthetic route would allow 1 to become more readily
Screening of a Custom-Designed Acid Fragment Library Identifies 1-Phenylpyrroles and 1-Phenylpyrrolidines as Inhibitors of Notum Carboxylesterase Activity
作者:William Mahy、Mikesh Patel、David Steadman、Hannah L. Woodward、Benjamin N. Atkinson、Fredrik Svensson、Nicky J. Willis、Alister Flint、Dimitra Papatheodorou、Yuguang Zhao、Luca Vecchia、Reinis R. Ruza、James Hillier、Sarah Frew、Amy Monaghan、Artur Costa、Magda Bictash、Magnus W. Walter、E. Yvonne Jones、Paul V. Fish
DOI:10.1021/acs.jmedchem.0c00660
日期:2020.9.10
The Wnt family of proteins are secreted signaling proteins that play key roles in regulating cellular functions. Recently, carboxylesterase Notum was shown to act as a negative regulator of Wnt signaling by mediating the removal of an essential palmitoleate. Here we disclose two new chemical scaffolds that inhibit Notum enzymatic activity. Our approach was to create a fragment library of 250 acids for screening against Notum in a biochemical assay followed by structure determination by X-ray crystallography. Twenty fragments were identified as hits for Notum inhibition, and 14 of these fragments were shown to bind in the palmitoleate pocket of Notum. Optimization of 1-phenylpyrrole 20, guided by structure-based drug design, identified 20z as the most potent compound from this series. Similarly, the optimization of 1-phenylpyrrolidine 8 gave acid 26. This work demonstrates that inhibition of Notum activity can be achieved by small, drug-like molecules possessing favorable in vitro ADME profiles.
Scaffold-hopping identifies furano[2,3-d]pyrimidine amides as potent Notum inhibitors
作者:Benjamin N. Atkinson、David Steadman、William Mahy、Yuguang Zhao、James Sipthorp、Elliott D. Bayle、Fredrik Svensson、George Papageorgiou、Fiona Jeganathan、Sarah Frew、Amy Monaghan、Magda Bictash、E. Yvonne Jones、Paul V. Fish
DOI:10.1016/j.bmcl.2019.126751
日期:2020.2
The carboxylesterase Notum is a key negative regulator of the Wnt signaling pathway by mediating the depalmitoleoylation of Wnt proteins. Our objective was to discover potent small molecule inhibitors of Notum suitable for exploring the regulation of Wnt signaling in the central nervous system. Scaffold-hopping from thienopyrimidine acids 1 and 2, supported by X-ray structure determination, identified 3-methylimidazolin-4-one amides 20-24 as potent inhibitors of Notum with activity across three orthogonal assay formats (biochemical, extra-cellular, occupancy). A preferred example 24 demonstrated good stability in mouse microsomes and plasma, and cell permeability in the MDCK-MDR1 assay albeit with modest P-gp mediated efflux. Pharmacokinetic studies with 24 were performed in vivo in mouse with single oral administration of 24 showing good plasma exposure and reasonable CNS penetration. We propose that 24 is a new chemical tool suitable for cellular studies to explore the fundamental biology of Notum.
[EN] HETEROARYL INHIBITORS OF PLASMA KALLIKREIN<br/>[FR] INHIBITEURS HÉTÉROARYLE DE LA KALLICRÉINE PLASMATIQUE
申请人:SHIRE HUMAN GENETIC THERAPIES
公开号:WO2022197758A1
公开(公告)日:2022-09-22
The present invention provides compounds and compositions thereof which are useful as inhibitors of plasma kallikrein and which exhibit desirable characteristics for the same.