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Updated: Jan 27, 2026

Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
Published on: August 16, 2018
Discovery of 7-(Pyridin-3-yl)thieno[3,2-b]pyridine-5-carboxamides as Negative Allosteric Modulators of Metabotropic
Scott H Henderson1,2, Anna E Ringuette1,2, David L Whomble1,2,3
1Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee 37232, United States.
Abstract:
Herein, we report the structure-activity relationship (SAR) to develop novel mGlu5 negative allosteric modulator (NAM) scaffolds devoid of the aryl/heterobiaryl acetylene moiety found in many historic mGlu5 NAMs, which has been linked to metabolic liabilities and hepatotoxicity. This endeavor utilized a scaffold-hopping strategy from the predecessor compound VU6031545, in which we replace an ether-linked tetrahydrofuran with various carbon-linked heteroaryl motifs to generate highly potent and selective mGlu5 NAMs. One such compound, VU6035386, displayed low nanomolar potency against human mGlu5 and was highly brain penetrant. Moreover, VU6035386 showed a vast improvement in predicted human hepatic clearance versus predecessor compound VU6031545.
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