Discovery and SAR of a novel series of potent, CNS penetrant M4 PAMs based on a non-enolizable ketone core: Challenges in disposition
作者:Michael R. Wood、Meredith J. Noetzel、James C. Tarr、Alice L. Rodriguez、Atin Lamsal、Sichen Chang、Jarrett J. Foster、Emery Smith、Peter Chase、Peter S. Hodder、Darren W. Engers、Colleen M. Niswender、Nicholas J. Brandon、Michael W. Wood、Mark E. Duggan、P. Jeffrey Conn、Thomas M. Bridges、Craig W. Lindsley
DOI:10.1016/j.bmcl.2016.07.042
日期:2016.9
This Letter describes the chemical optimization of a novel series of M4 PAMs based on a non-enolizable ketone core, identified from an MLPCN functional high-throughput screen. The HTS hit was potent, selective and CNS penetrant; however, the compound was highly cleared in vitro and in vivo. SAR provided analogs for which M4 PAM potency and CNS exposure were maintained; yet, clearance remained high
这封信描述了基于不可烯化酮核的一系列新型M 4 PAM的化学优化,该酮核是从MLPCN功能性高通量筛选中鉴定出来的。HTS命中力强,选择性强且具有CNS渗透性;但是,该化合物在体外和体内均高度清除。SAR提供了维持M 4 PAM效力和CNS暴露的类似物。但是,清除率仍然很高。代谢物鉴定研究表明,该系列产品经历了快速且接近定量的还原代谢,转化为相应的没有M 4 PAM活性的仲醇代谢物。