Positive allosteric modulators of the metabotropic glutamate receptor subtype 4 (mGluR4). Part II: Challenges in hit-to-lead
作者:Richard Williams、Colleen M. Niswender、Qingwei Luo、Uyen Le、P. Jeffrey Conn、Craig W. Lindsley
DOI:10.1016/j.bmcl.2008.11.104
日期:2009.2
This Letter describes the synthesis and SAR of two mGluR4 positive allosteric modulator leads, 6 and 7. VU001171 (6) represents the most potent (EC50 = 650 nM), efficacious (141% Glu Max) and largest fold shift (36-fold) of any mGluR4 PAM reported to date. However, this work highlights the challenges in hit-to-lead for mGluR4 PAMs, with multiple confirmed HTS hits displaying little or no tractable SAR. (C) 2008 Elsevier Ltd. All rights reserved.