TY - JOUR
T1 - Design, synthesis and structure-activity relationships of novel phenylalanine-based amino acids as kainate receptors ligands
AU - Szymańska, Ewa
AU - Chałupnik, Paulina
AU - Szczepańska, Katarzyna
AU - Moral, Ana Maria Cuñado
AU - Pickering, Darryl S
AU - Nielsen, Birgitte
AU - Johansen, Tommy Nørskov
AU - Kieć-Kononowicz, Kieć-Kononowicz
PY - 2016
Y1 - 2016
N2 - A new series of carboxyaryl-substituted phenylalanines was designed, synthesized and pharmacologically characterized in vitro at native rat ionotropic glutamate receptors as well as at cloned homomeric kainate receptors GluK1-GluK3. Among them, six compounds bound to GluK1 receptor subtypes with reasonable affinity (Ki values in the range of 4.9-7.5 uM). A structure-activity relationship (SAR) for the obtained series, focused mainly on the pharmacological effect of structural modifications in the 4- and 5-position of the phenylalanine ring, was established. To illustrate the results, molecular docking of the synthesized series to the X-ray structure of GluK1 ligand binding core was performed. The influence of individual substituents at the phenylalanine ring for both the affinity and selectivity at AMPA, GluK1 and GluK3 receptors was analyzed, giving directions for future studies.
AB - A new series of carboxyaryl-substituted phenylalanines was designed, synthesized and pharmacologically characterized in vitro at native rat ionotropic glutamate receptors as well as at cloned homomeric kainate receptors GluK1-GluK3. Among them, six compounds bound to GluK1 receptor subtypes with reasonable affinity (Ki values in the range of 4.9-7.5 uM). A structure-activity relationship (SAR) for the obtained series, focused mainly on the pharmacological effect of structural modifications in the 4- and 5-position of the phenylalanine ring, was established. To illustrate the results, molecular docking of the synthesized series to the X-ray structure of GluK1 ligand binding core was performed. The influence of individual substituents at the phenylalanine ring for both the affinity and selectivity at AMPA, GluK1 and GluK3 receptors was analyzed, giving directions for future studies.
U2 - 10.1016/j.bmcl.2016.09.075
DO - 10.1016/j.bmcl.2016.09.075
M3 - Journal article
C2 - 27765511
VL - 26
SP - 5568
EP - 5572
JO - Bioorganic & Medicinal Chemistry Letters
JF - Bioorganic & Medicinal Chemistry Letters
SN - 0960-894X
IS - 22
ER -