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  • Title: Dopamine/serotonin receptor ligands. 16.(1) Expanding dibenz[d,g]azecines to 11- and 12-membered homologues. Interaction with dopamine D(1)-D(5) receptors.
    Author: Enzensperger C, Müller FK, Schmalwasser B, Wiecha P, Traber H, Lehmann J.
    Journal: J Med Chem; 2007 Sep 06; 50(18):4528-33. PubMed ID: 17676831.
    Abstract:
    Oxygenated 7-methyl-5,6,7,8,9,14-hexahydrodibenz[d,g]azecines are potent dopamine receptor antagonists, preferentially at D1/D5. We synthesized the hydroxylated, methoxylated, and chlorinated 11-membered and 12-membered homologues of these 10-membered heterocycles. Their affinities for the human cloned D1-D5 receptors (radioligand binding) and functionalities (calcium assay) were measured. Enlarging the dibenzazecines to the corresponding dibenzazacycloundecenes and dibenzazacyclododecenes generally maintains the high antagonistic affinity for D1/D5 but also leads to a compound with a clozapine-like binding profile due to additional affinity for D4.
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