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  • Title: Design and optimization of selective azaindole amide M1 positive allosteric modulators.
    Author: Davoren JE, O'Neil SV, Anderson DP, Brodney MA, Chenard L, Dlugolenski K, Edgerton JR, Green M, Garnsey M, Grimwood S, Harris AR, Kauffman GW, LaChapelle E, Lazzaro JT, Lee CW, Lotarski SM, Nason DM, Obach RS, Reinhart V, Salomon-Ferrer R, Steyn SJ, Webb D, Yan J, Zhang L.
    Journal: Bioorg Med Chem Lett; 2016 Jan 15; 26(2):650-655. PubMed ID: 26631313.
    Abstract:
    Selective activation of the M1 receptor via a positive allosteric modulator (PAM) is a new approach for the treatment of the cognitive impairments associated with schizophrenia and Alzheimer's disease. A novel series of azaindole amides and their key pharmacophore elements are described. The nitrogen of the azaindole core is a key design element as it forms an intramolecular hydrogen bond with the amide N-H thus reinforcing the bioactive conformation predicted by published SAR and our homology model. Representative compound 25 is a potent and selective M1 PAM that has well aligned physicochemical properties, adequate brain penetration and pharmacokinetic (PK) properties, and is active in vivo. These favorable properties indicate that this series possesses suitable qualities for further development and studies.
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