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  • Title: Quinolizidinyl derivatives of 5,11-dihydro-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one as ligands for muscarinic receptors.
    Author: Novelli F, Sparatore A, Tasso B, Sparatore F.
    Journal: Bioorg Med Chem Lett; 1999 Oct 18; 9(20):3031-4. PubMed ID: 10571170.
    Abstract:
    Quinolizidinyl derivatives of the tricyclic systems characterizing pirenzepine and nuvenzepine, were prepared and tested as ligands for muscarinic M1, M2 and M3 receptors; 5,11-dihydro-11-[(S-lupinyl)-thioacetyl]-6H-pyrido[2,3-b][1, 4]benzodiazepin-6-one exhibited IC50 = 10 nM for M1 and 760 nM for both M2 and M3 subtypes. During the synthesis some interesting side compounds were isolated and characterized.
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