Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 47, Issue -, Pages 520-529Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2011.11.023
Keywords
N '-cyanopicolinamidine derivatives; 5-HT1A ligands; 5-HT2A ligands; Binding assays
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N'-cyanopicolinamidine derivatives, linked to an arylpiperazine moiety, were prepared and their affinity to serotonin 5-HT2A and 5-HT2c receptors were evaluated. The combination of structural elements (heterocyclic nucleus, alkyl chain and 4-substituted piperazine) known to be critical for affinity to 5-HT1A, receptors and the proper selection of substituents led to compounds with high specificity and affinity towards serotoninergic receptors. In binding studies, several molecules showed affinity in nanomolar and subnanomolar range at 5-HT2A and moderate to no affinity for other relevant receptors (5-HT1A, 5-HT2c, D1, D2, alpha(1) and alpha(2)). N'-cyano-N-(3-(4-(3-chlorophenyl)piperazin-1-yl)propyl)-Picolina-midine (41) with K-i = 0.000185 nm, was the most active and selective derivative for the 5-HT2A receptor compared to other serotoninergic, dopaminergic and adrenergic receptors. (C) 2011 Elsevier Masson SAS. All rights reserved.
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