Bivalent dopamine D2 receptor ligands: synthesis and binding properties.
Basic Information
ID: ALA1799971
Journal: J Med Chem
Title: Bivalent dopamine D2 receptor ligands: synthesis and binding properties.
Authors: Kühhorn J, Hübner H, Gmeiner P.
Abstract: Dopamine D(2) receptor homodimers might be of particular importance in the pathophysiology of schizophrenia and, thus, serve as promising target proteins for the discovery of atypical antipsychotics. A highly attractive approach to investigate and control GPCR dimerization may be provided by the exploration and characterization of bivalent ligands, which can act as molecular probes simultaneously binding two adjacent binding sites of a dimer. The synthesis of bivalent dopamine D(2) receptor ligands of type 1 is presented, incorporating the privileged structure of 1,4-disubstituted aromatic piperidines/piperazines (1,4-DAPs) and triazolyl-linked spacer elements. Radioligand binding studies provided diagnostic insights when Hill slopes close to two for bivalent ligands with particular spacer lengths and a comparative analysis with respective monovalent control ligands and unsymmetrically substituted analogues indicated a bivalent binding mode with a simultaneous occupancy of two neighboring binding sites.
CiteXplore: 21599022
DOI: 10.1021/jm2004859
Patent ID: ┄