Bis(het)aryl-1,2,3-triazole quinuclidines as α7 nicotinic acetylcholine receptor ligands: Synthesis, structure affinity relationships, agonism activity, [18F]-radiolabeling and PET study in rats

European Journal of Medicinal Chemistry
2019.0

Abstract

In this paper we describe the design and synthesis of bis(Het)Aryl-1,2,3-triazole quinuclidine α7R ligands using an efficient three-step sequence including a Suzuki-Miyaura cross coupling reaction with commercially available and home-made boron derivatives. The exploration of SAR required the preparation of uncommon boron derivatives. Forty final drugs were tested for their ability to bind the target and nine of them exhibited Ki values below nanomolar concentrations. The best scores were always obtained when the 5-phenyl-2-thiophenyl core was attached to the triazole. The selectivity of these compounds towards the nicotinic α4β2 and serotoninergic 5HT3 receptors was assessed and their brain penetration was quantified by the preparation and in vivo evaluation of two [18F] radiolabelled derivatives. It can be expected from our results that some of these compounds will be suitable for further developments and will have effects on cognitive disorders.

Knowledge Graph

Similar Paper

Bis(het)aryl-1,2,3-triazole quinuclidines as α7 nicotinic acetylcholine receptor ligands: Synthesis, structure affinity relationships, agonism activity, [18F]-radiolabeling and PET study in rats
European Journal of Medicinal Chemistry 2019.0
Derivatives of Dibenzothiophene for Positron Emission Tomography Imaging of α7-Nicotinic Acetylcholine Receptors
Journal of Medicinal Chemistry 2013.0
New quinoline derivatives as nicotinic receptor modulators
European Journal of Medicinal Chemistry 2016.0
Novel N-aryl nicotinamide derivatives: Taking stock on 3,6-diazabicyclo[3.1.1]heptanes as ligands for neuronal acetylcholine receptors
European Journal of Medicinal Chemistry 2019.0
Design, Synthesis, and Preliminary Pharmacological Evaluation of New Quinoline Derivatives as Nicotinic Ligands
Journal of Medicinal Chemistry 2007.0
Derivatives of (−)-7-Methyl-2-(5-(pyridinyl)pyridin-3-yl)-7-azabicyclo[2.2.1]heptane Are Potential Ligands for Positron Emission Tomography Imaging of Extrathalamic Nicotinic Acetylcholine Receptors
Journal of Medicinal Chemistry 2007.0
2-(Arylmethyl)-3-substituted quinuclidines as selective α7 nicotinic receptor ligands
Bioorganic & Medicinal Chemistry Letters 2005.0
High affinity ligands for the α7 nicotinic receptor that show no cross-reactivity with the 5-HT3 receptor
Bioorganic & Medicinal Chemistry Letters 2005.0
Synthesis and muscarinic activities of 1,2,4-thiadiazoles
Journal of Medicinal Chemistry 1990.0
Design of novel 3,6-diazabicyclo[3.1.1]heptane derivatives with potent and selective affinities for α4β2 neuronal nicotinic acetylcholine receptors
European Journal of Medicinal Chemistry 2015.0