Synthesis and Evaluation of Aryl-Substituted <i>N</i>-(Arylethyl)-<i>N</i>-methyl-2-(1-pyrrolidinyl)ethylamines and Corresponding Arylacetamides for Sigma Receptor Affinity
作者:Ying Zhang、Wanda Williams、Wayne D. Bowen、Kenner C. Rice
DOI:10.1021/jm9600813
日期:1996.1.1
A series of aryl-monosubstituted arylacetamides (4-9) and arylethylenediamine (10-18) compounds were synthesized based on the structure of the high-affinity sigma ligand N-[2-(3 ,4-dichlorophenyl)ethyl] -N-nlethyl-2-(1-pyrrolidinyl)ethylamine (2). These compounds were prepared to evaluate the effect of aromatic substitution patterns on sigma-1 and sigma-2 receptor binding affinity and selectivity. The data indicate that 10-18 possessed higher affinity than 4-9 for both sigma sites, especially when substituted with an electron-withdrawing group. The diamine compounds 10-18 were selective for sigma-1 binding sites, whereas the arylacetamide compounds 4-9 generally exhibited an increased selectivity far sigma-2 sites compared to sigma-1. No clear pattern between the orientation of aromatic substituents and the sigma binding activity was observed.