A multidimensional, iterative parallel synthesis effort identified a series of highly selective mGlu3 NAMs with submicromolar potency and good CNS penetration. Of these, ML337 resulted (mGlu3 IC50 = 593 nM, mGlu2 IC50 >30 μM) with B:P ratios of 0.92 (mouse) to 0.3 (rat). DMPK profiling and shallow SAR led to the incorporation of deuterium atoms to address a metabolic soft spot, which subsequently lowered both in vitro and in vivo clearance by >50%.
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http://dx.doi.org/10.1021/jm400439t | DOI Listing |
Br J Pharmacol
December 2017
Department of Pharmacy, DiFAR, University of Genoa, Genoa, Italy.
Background And Purpose: We recently proposed the existence of mGlu -preferring autoreceptors in spinal cord terminals and of mGlu -preferring autoreceptors in cortical terminals. This study aims to verify our previous conclusions and to extend their pharmacological characterization.
Experimental Approach: We studied the effect of LY566332, an mGlu receptor positive allosteric modulator (PAM), and of LY2389575, a selective mGlu receptor negative allosteric (NAM) modulator, on the mGlu agonist LY379268-mediated inhibition of glutamate exocytosis [measured as KCl-evoked release of preloaded [ H]-D-aspartate].
J Med Chem
June 2013
Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA.
A multidimensional, iterative parallel synthesis effort identified a series of highly selective mGlu3 NAMs with submicromolar potency and good CNS penetration. Of these, ML337 resulted (mGlu3 IC50 = 593 nM, mGlu2 IC50 >30 μM) with B:P ratios of 0.92 (mouse) to 0.
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