Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 180, Issue -, Pages 340-349Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2019.07.008
Keywords
GABA(A) receptors; Pyrazoloquinolinones; Allosteric modulators; Pharmacophore
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Funding
- Austrian Science Fund FWF [W1232]
- Austrian Science Fund (FWF) [W1232] Funding Source: Austrian Science Fund (FWF)
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Allosteric ligands of GABA(A) receptors exist in many different chemotypes owing to their great usefulness as therapeutics, with benzodiazepines being among the best known examples. Many allosteric binding sites have been described, among them a site at the extracellular interface between the alpha principal face and the beta complementary face (alpha+/beta-). Pyrazoloquinolinones have been shown to bind at alpha+/beta-binding sites of GABA(A) receptors, exerting chiefly positive allosteric modulation at this location. In order to further explore molecular determinants of this type of allosteric modulation, we synthesized a library of ligands based on the PQ pharmacophore employing a ring-chain bioisosteric approach. In this study we analyzed the structure-activity-relationship (SAR) of these novel ligands based on an azo-biaryl structural motif in alpha 1 beta 3 GABA(A) receptors, indicating interesting novel properties of the compound class. (C) 2019 The Authors. Published by Elsevier Masson SAS.
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