Abstract
Fifteen adamantane derivatives were synthesized. Preliminary evaluation of their potential as dipeptidyl peptidase 4 (DPP-4) inhibitors was performed in silico by the Microcosm informational technology, PASS system, and docking in AutoDock Vina. The DPP-4 inhibition was studied in vitro. The selectivity of action of the most active compounds was studied by the direct inhibition of human plasma DPP-4 and recombinant human DPP-8. The highest activity was found for the compounds containing a nitrogen atom in the β-position of the side chain, namely, derivatives of adamantane carboxylic acid and N-(3-adamantyl-allyl) thiourea. We demonstrated that the most active compound of the series, 3,5-dimethyladamantane 1-carboxamide, was a selective DPP-4 inhibitor with IC50 53.94 μM.
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