Design of 4-Oxo-1-aryl-1,4-dihydroquinoline-3-carboxamides as Selective Negative Allosteric Modulators of Metabotropic Glutamate Receptor Subtype 2.

Felts AS, Rodriguez AL, Smith KA, Engers JL, Morrison RD, Byers FW, Blobaum AL, Locuson CW, Chang S, Venable DF, Niswender CM, Daniels JS, Conn PJ, Lindsley CW, Emmitte KA
J Med Chem. 2015 58 (22): 9027-40

PMID: 26524606 · PMCID: PMC4817271 · DOI:10.1021/acs.jmedchem.5b01371

Both orthosteric and allosteric antagonists of the group II metabotropic glutamate receptors (mGlus) have been used to establish a link between mGlu2/3 inhibition and a variety of CNS diseases and disorders. Though these tools typically have good selectivity for mGlu2/3 versus the remaining six members of the mGlu family, compounds that are selective for only one of the individual group II mGlus have proved elusive. Herein we report on the discovery of a potent and highly selective mGlu2 negative allosteric modulator 58 (VU6001192) from a series of 4-oxo-1-aryl-1,4-dihydroquinoline-3-carboxamides. The concept for the design of this series centered on morphing a quinoline series recently disclosed in the patent literature into a chemotype previously used for the preparation of muscarinic acetylcholine receptor subtype 1 positive allosteric modulators. Compound 58 exhibits a favorable profile and will be a useful tool for understanding the biological implications of selective inhibition of mGlu2 in the CNS.

MeSH Terms (11)

Animals Central Nervous System Drug Discovery Mice Protein Binding Quinolines Quinolones Rats Receptor, Muscarinic M1 Receptors, Metabotropic Glutamate Structure-Activity Relationship

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