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Article Dans Une Revue ChemMedChem Année : 2023

Second‐Generation CD73 Inhibitors Based on a 4,6‐Biaryl‐2‐thiopyridine Scaffold

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Various series of 4,6-biaryl-2-thiopyridine derivatives were synthesized and evaluated as potential ecto-5'-nucleotidase (CD73) inhibitors. Two synthetic routes were explored and the coupling of 4,6-disubstituted 3-cyano-2-chloro-pyridines with selected thiols allowed us to explore the structural diversity. Somehow divergent results were obtained in biological assays on CD73 inhibition using either the purified recombinant protein or cell-based assays, highlighting the difficulty to target protein-protein interface on proteins existing as soluble and membrane-bound forms. Among the 18 new derivatives obtained, three derivatives incorporating morpholino substituents on the 4,6-biaryl-2-thiopyridine core were shown to be able to reverse the adenosine-mediated immune suppression on human T cells. The higher blockade efficiency was observed for 2-((3-cyano-4,6-bis(4-morpholinophenyl)pyridin-2-yl)thio)-N-(isoxazol-3-yl)acetamide (with total reversion at 100 μM) and methyl 2-((3-cyano-4,6-bis(4-morpholinophenyl)pyridin-2yl)thio)acetate (with partial reversion at 10 μM). Thus, this series of compounds illustrates a new chemotype of CD73 allosteric inhibitors.
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hal-04165181 , version 1 (18-07-2023)

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Rayane Ghoteimi, Abdennour Braka, Céline Rodriguez, Emeline Cros‐perrial, Valentin Duvauchelle, et al.. Second‐Generation CD73 Inhibitors Based on a 4,6‐Biaryl‐2‐thiopyridine Scaffold. ChemMedChem, 2023, 18 (7), pp.e202200594. ⟨10.1002/cmdc.202200594⟩. ⟨hal-04165181⟩
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