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ID: ALA3868610
Journal: Bioorg Med Chem Lett
Title: Novel bicyclo[3.1.0]hexane analogs as antagonists of metabotropic glutamate 2/3 receptors for the treatment of depression.
Authors: Dressman BA, Tromiczak EG, Chappell MD, Tripp AE, Quimby SJ, Vetman T, Fivush AM, Matt J, Jaramillo C, Li R, Khilevich A, Blanco MJ, Smith SC, Carpintero M, de Diego JE, Barberis M, García-Cerrada S, Soriano JF, Schkeryantz JM, Witkin JM, Wafford KA, Seidel W, Britton T, Overshiner CD, Li X, Wang XS, Heinz BA, Catlow JT, Swanson S, Bedwell D, Ornstein PL, Mitch CH.
Abstract: Negative modulators of metabotropic glutamate 2 & 3 receptors demonstrate antidepressant-like activity in animal models and hold promise as novel therapeutic agents for the treatment of major depressive disorder. Herein we describe our efforts to prepare and optimize a series of conformationally constrained 3,4-disubstituted bicyclo[3.1.0]hexane glutamic acid analogs as orthosteric (glutamate site) mGlu2/3 receptor antagonists. This work led to the discovery of a highly potent and efficacious tool compound 18 (hmGlu2 IC50 46±14.2nM, hmGlu3 IC50=46.1±36.2nM). Compound 18 showed activity in the mouse forced swim test with a minimal effective dose (MED) of 1mg/kg ip. While in rat EEG studies it exhibited wake promoting effects at 3 and 10mg/kg ip without any significant effects on locomotor activity. Compound 18 thus represents a novel tool molecule for studying the impact of blocking mGlu2/3 receptors both in vitro and in vivo.
CiteXplore: 27836401