Synthesis and neuropharmacological evaluation of esters of R(−)-N-alkyl-11-hydroxy-2-methoxynoraporphines
作者:Yu-Gui Si、Yong-Kee Choi、Matthew P. Gardner、Frank I. Tarazi、Ross J. Baldessarini、John L. Neumeyer
DOI:10.1016/j.bmcl.2008.11.025
日期:2009.1
We synthesized several esters of R(-)-N-alkyl-11-hydroxy-2-methoxynoraporphines, assessed their affinities at dopamine D-1 and D-2 receptors in rat forebrain tissue and quantified their effects on motor activity in normal adult male rats. Tested compounds displayed moderate to high affinities to D-2 receptors but low affinities to D-1 receptors. The most D-2-potent (K-i = 18.9 nM) and selective novel agent (>529-fold vs D-1 sites) was R(-)-2-methoxy-11-acetyloxy-N-n-propylnoraporphine (compound 4b). At moderate doses, the compound proved to have prolonged behavioral locomotor activity. (C) 2008 Elsevier Ltd. All rights reserved.