Design, Synthesis, and Pharmacological Evaluation of Potent Positive Allosteric Modulators of the Glucagon-like Peptide-1 Receptor (GLP-1R)

Autor: Elisabeth Defossa, Matthias Löhn, Matthias Schäfer, Pavel Safar, Dietmar Weitz, Kristin Breitschopf, Matthias Lohmann, María Méndez, David S Thorpe, Jens Riedel, Nils Rackelmann, Hartmut Mors, Hans Matter, Michael Kurz, Ziyu Li, Michael Podeschwa, Sylvain Lebreton
Rok vydání: 2019
Předmět:
Zdroj: Journal of Medicinal Chemistry. 63:2292-2307
ISSN: 1520-4804
0022-2623
DOI: 10.1021/acs.jmedchem.9b01071
Popis: The therapeutic success of peptidic GLP-1 receptor agonists for treatment of type 2 diabetes mellitus (T2DM) motivated our search for orally bioavailable small molecules that can activate the GLP-1 receptor (GLP-1R) as a well-validated target for T2DM. Here, the discovery and characterization of a potent and selective positive allosteric modulator (PAM) for GLP-1R based on a 3,4,5,6-tetrahydro-1H-1,5-epiminoazocino[4,5-b]indole scaffold is reported. Optimization of this series from HTS was supported by a GLP-1R ligand binding model. Biological in vitro testing revealed favorable ADME and pharmacological profiles for the best compound 19. Characterization by in vivo pharmacokinetic and pharmacological studies demonstrated that 19 activates GLP-1R as positive allosteric modulator (PAM) in the presence of the much less active endogenous degradation product GLP1(9-36)NH2 of the potent endogenous ligand GLP-1(7-36)NH2. While these data suggest the potential of small molecule GLP-1R PAMs for T2DM treatment, further optimization is still required towards a clinical candidate.
Databáze: OpenAIRE