Challenges in the development of an M 4 PAM preclinical candidate: The discovery, SAR, and biological characterization of a series of azetidine-derived tertiary amides
作者:James C. Tarr、Michael R. Wood、Meredith J. Noetzel、Bruce J. Melancon、Atin Lamsal、Vincent B. Luscombe、Alice L. Rodriguez、Frank W. Byers、Sichen Chang、Hyekyung P. Cho、Darren W. Engers、Carrie K. Jones、Colleen M. Niswender、Michael W. Wood、Nicholas J. Brandon、Mark E. Duggan、P. Jeffrey Conn、Thomas M. Bridges、Craig W. Lindsley
DOI:10.1016/j.bmcl.2017.10.053
日期:2017.12
Herein we describe the continued optimization of M-4 positive allosteric modulators (PAMs) within the 5-amino-thieno[2,3-c] pyridazine series of compounds. In this letter, we disclose our studies on tertiary amides derived from substituted azetidines. This series provided excellent CNS penetration, which had been challenging to consistently achieve in other amide series. Efforts to mitigate high clearance, aided by metabolic softspot analysis, were unsuccessful and precluded this series from further consideration as a preclinical candidate. In the course of this study, we found that potassium tetrafluoroborate salts could be engaged in a tosyl hydrazone reductive cross coupling reaction, a previously unreported transformation, which expands the synthetic utility of the methodology. (C) 2017 Elsevier Ltd. All rights reserved.
ACS Med. Chem. Lett. 2010, 1, 209-213
作者:
DOI:——
日期:——
[EN] STAT MODULATORS AND USES THEREOF<br/>[FR] MODULATEURS DE STAT ET LEURS UTILISATIONS
申请人:[en]RECLUDIX PHARMA, INC.
公开号:WO2023133336A1
公开(公告)日:2023-07-13
Provided are compounds of Formula (I): and pharmaceutically acceptable salts and compositions thereof, which are useful for treating a variety of conditions associated with STAT3 and/or STAT6.