Synthesis and allosteric modulation of the dopamine receptor by peptide analogs of l-prolyl-l-leucyl-glycinamide (PLG) modified in the l-proline or l-proline and l-leucine scaffolds
摘要:
Novel analogs of L-prolyl-L-leucylglycinamide (PLC) were synthesized wherein the prolyl residue was replaced with other amino acids based on a 3,5-disubstituted proline scaffold. In some examples, the L-leucyl residue was also replaced by L-valine. These analogs were tested for their ability to enhance the binding of [H-3]-N-propylnorapomorphine to short isoform of human dopamine D-2 receptors.Compounds 18b and 19b, increased [H-3] NPA binding at concentrations between 10(-12) and 10(-9) M, which is similar to the effect of PLG in this assay and, provides evidences that these compounds are acting as allosteric modulators of dopamine D-2 receptors. (C) 2013 Elsevier Masson SAS. All rights reserved.
Synthesis and allosteric modulation of the dopamine receptor by peptide analogs of l-prolyl-l-leucyl-glycinamide (PLG) modified in the l-proline or l-proline and l-leucine scaffolds
作者:Joana Ferreira da Costa、Olga Caamaño、Franco Fernández、Xerardo García-Mera、Ivo E. Sampaio-Dias、José Manuel Brea、María Isabel Cadavid
DOI:10.1016/j.ejmech.2013.08.001
日期:2013.11
Novel analogs of L-prolyl-L-leucylglycinamide (PLC) were synthesized wherein the prolyl residue was replaced with other amino acids based on a 3,5-disubstituted proline scaffold. In some examples, the L-leucyl residue was also replaced by L-valine. These analogs were tested for their ability to enhance the binding of [H-3]-N-propylnorapomorphine to short isoform of human dopamine D-2 receptors.Compounds 18b and 19b, increased [H-3] NPA binding at concentrations between 10(-12) and 10(-9) M, which is similar to the effect of PLG in this assay and, provides evidences that these compounds are acting as allosteric modulators of dopamine D-2 receptors. (C) 2013 Elsevier Masson SAS. All rights reserved.