Synthesis of new 1,2,3-benzotriazin-4-one-arylpiperazine derivatives as 5-HT 1A serotonin receptor ligands
作者:Giuseppe Caliendo、Ferdinando Fiorino、Paolo Grieco、Elisa Perissutti、Vincenzo Santagada、Beatrice Severino、Giancarlo Bruni、Maria Rosaria Romeo
DOI:10.1016/s0968-0896(00)00004-3
日期:2000.3
A series of novel 1,2,3-benzotriazin-4-one derivatives was prepared and evaluated as ligands for 5-HT receptors. Radioligand binding assays proved that the majority of the novel compounds behaved as good to excellent ligands at the 5-HT1A receptor, some of which were selective with respect 5-HT2A and 5-HT2C receptors. Six analogues (1a, 2a, 2b, 2c, 2e and 2i) were selected and further evaluated for their binding affinities on D-1, D-2 dopaminergic and alpha(1)-, alpha(2)-adrenergic receptors. A o-OCH3 derivative (2e) bound at 5-HT1A sites with subnanomolar affinity (IC50 = 0.059 nM) and shows high selectivity over all considered receptors and may offer a new lead for the development of therapeutically efficacious agents. (C) 2000 Elsevier Science Ltd. All rights reserved.