Development of novel phenoxyalkylpiperidines as high-affinity Sigma-1 (σ1) receptor ligands with potent anti-amnesic effect

Autor: Francesca S. Abatematteo, Philip D. Mosier, Mauro Niso, Leonardo Brunetti, Francesco Berardi, Fulvio Loiodice, Marialessandra Contino, Benjamin Delprat, Tangui Maurice, Antonio Laghezza, Carmen Abate
Přispěvatelé: Università degli studi di Bari Aldo Moro = University of Bari Aldo Moro (UNIBA), Medical College of Wisconsin [Milwaukee] (MCW), Mécanismes moléculaires dans les démences neurodégénératives (MMDN), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Delprat, Benjamin
Rok vydání: 2022
Předmět:
Zdroj: European Journal of Medicinal Chemistry
European Journal of Medicinal Chemistry, 2022, 228, pp.114038. ⟨10.1016/j.ejmech.2021.114038⟩
ISSN: 0223-5234
1768-3254
Popis: International audience; The sigma-1 (σ1) receptor plays a significant role in many normal physiological functions and pathological disease states, and as such represents an attractive therapeutic target for both agonists and antagonists. Here, we describe a novel series of phenoxyalkylpiperidines based on the lead compound 1-[ω-(4-chlorophenoxy)ethyl]-4-methylpiperidine (1a) in which the degree of methylation at the carbon atoms alpha to the piperidine nitrogen was systematically varied. The affinity at σ1 and σ2 receptors and at Δ8-Δ7 sterol isomerase (SI) ranged from subnanomolar to micromolar Ki values. While the highest-affinity was displayed at the σ1, the increase of the degree of methylation in the piperidine ring progressively decreased the affinity. The subnanomolar affinity 1a and 1-[ω-(4-methoxyphenoxy)ethyl]-4-methylpiperidine (1b) displayed potent anti-amnesic effects associated with σ1 receptor agonism, in two memory tests. Automated receptor-small-molecule ligand docking provided a molecular structure-based rationale for the agonistic effects of 1a and 1b. Overall, the class of the phenoxyalkylpiperidines holds potential for the development of high affinity σ1 receptor agonists, and compound 1a, that appears as the best in class (exceeding by far the activity of the reference compound PRE-084) deserves further investigation.
Databáze: OpenAIRE
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