We have designed and synthesized a series of 60 new 5- and 7-hydroxycoumarin derivatives bearing the piperazine moiety with the expected binding to 5-HT1A and 5-HT2A receptors. Molecular docking of all investigated compounds revealed subnanomolar estimates of 5-HT1AR Ki for three ligands and 5-HT2AR Ki for one ligand as well as numerous low nanomolar estimates of Ki for both receptors. Intrigued by these results we synthesized all 60 new derivatives using microwave-assisted protocols. We show that three new compounds show a relatively high antagonistic activity against the 5HT1A receptor, although lower than the reference compound WAY-100635. These compounds also showed relatively low binding affinities to the 5-HT2A receptor. We also provide a detailed structure–activity analysis of this series of compounds and compare it with previously obtained results for an exhaustive series of coumarin derivatives.
Kumaryna i jej pochodne są ważnymi obiektami w badaniach chemii medycznej. Przegląd najnowszej literatury naukowej pokazuje, że oprócz działania przeciwnowotworowego, przeciwbakteryjnego, przeciwgrzybiczego i przeciwzapalnego, związki te wykazują działanie przeciwzakrzepowe oraz antyoksydacyjne. Niniejsza praca zawiera przegląd doniesień literaturowych dotyczących aktywności pochodnych 5-hydroksykumaryny jako cennego, ale wciąż mało zbadanego źródła struktur wiodących do poszukiwania nowych substancji leczniczych.
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