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Design, synthesis and docking study of novel coumarin ligands as potential selective acetylcholinesterase inhibitors

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Date
2017-01-01
Authors
Sonmez, Fatih
KURT, Belma Zengin
Gazioglu, IŞIL
BASILE, Livia
Dag, AYDAN
CAPPELLO, Valentina
GINEX, Tiziana
Kucukislamoglu, Mustafa
GUCCIONE, Salvatore
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Research Projects
Sustainable Development Goals
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Abstract
New coumaryl-thiazole derivatives with the acetamide moiety as a linker between the alkyl chains and/or the heterocycle nucleus were synthesized and in vitro tested as acetylcholinesterase (AChE) inhibitors. 2-(diethylamino)-N-(4-(2-oxo-2H-chromen-3-yl)thiazol-2-yl)acetamide (6c, IC50 value of 43 nM) was the best AChE inhibitor with a selectivity index of 4151.16 over BuChE. Kinetic study of AChE inhibition revealed that 6c was a mixed-type inhibitor. Moreover, the result of H4IIE hepatoma cell toxicity assay for 6c showed negligible cell death. Molecular docking studies were also carried out to clarify the inhibition mode of the more active compounds. Best pose of compound 6c is positioned into the active site with the coumarin ring wedged between the residues of the CAS and catalytic triad of AChE. In addition, the coumarin ring is anchored into the gorge of the enzyme by H-bond with Tyr130.
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Sonmez F., KURT B. Z. , Gazioglu I., BASILE L., Dag A., CAPPELLO V., GINEX T., Kucukislamoglu M., GUCCIONE S., -Design, synthesis and docking study of novel coumarin ligands as potential selective acetylcholinesterase inhibitors-, JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY, cilt.32, ss.285-297, 2017