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European journal of medicinal chemistry v.143, 2018년, pp.276 - 282   SCI SCIE
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Inhibitory effects and structural insights for a novel series of coumarin-based compounds that selectively target human CA IX and CA XII carbonic anhydrases

De Luca, Laura (Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali (CHIBIOFARAM), Università ) ; Mancuso, Francesca (degli Studi di Messina, Viale Annunziata, I-98168 Messina, Italy ) ; Ferro, Stefania (Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali (CHIBIOFARAM), Università ) ; Buemi, Maria Rosa (degli Studi di Messina, Viale Annunziata, I-98168 Messina, Italy ) ; Angeli, Andrea (Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali (CHIBIOFARAM), Università ) ; Del Prete, Sonia (degli Studi di Messina, Viale Annunziata, I-98168 Messina, Italy ) ; Capasso, Clemente (Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali (CHIBIOFARAM), Università ) ; Supuran, Claudiu T. (degli Studi di Messina, Viale Annunziata, I-98168 Messina, Italy ) ; Gitto, Rosaria (Dipartimento NEUROFARBA, Università ) ;
  • 초록  

    Abstract Coumarin derivatives are a peculiar class of inhibitors of the family of metalloenzymes carbonic anhydrases (CA, EC 4.2.1.1). Several coumarins display higher affinity and selectivity toward most relevant and druggable CA isoforms. By decorating the natural compound umbelliferone ( 1 ) we have identified a new series of coumarin-based compounds demonstrating high CA inhibitory effects with nanomolar affinity for hCA IX and hCA XII isoforms that were considered a target amenable to develop antitumor agents. The most active tested compounds proved to be potent inhibitors with K i values equal to that of the well-known inhibitor acetazolamide (AAZ), that lacks selectivity over ubiquitous hCA I and hCA II. As suggested by docking studies the coumarins, that are lacking of the canonical metal binding groups, do not interact with Zinc ion within the catalytic site as found for classical sulfonamide type inhibitors of CAs. Thus, the studied inhibitors might possess a non-classical inhibitory mode of action preventing the carbon dioxide to entry into catalytic cavity and its conversion into bicarbonate ion. Specifically, the most active inhibitor of hCA XII compound 18i ( K i value of 5.5 nM) and its supposed hydrolytic products could establish a web of H-bond interactions within the enzymatic cavity. Highlights New coumarin-based derivatives as CA inhibitors were designed and synthesized. Several cumarins were effective inhibitors of tumor-associated hCA IX and hCA XII. Developed cumarins were selective inhibitors over ubiquitous hCA I and hCA II. Docking studies suggested the binding mode of active compound ( 18i ) and hCA XII. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Coumarins .   hCAs .   hCA IX .   hCA XII .   Antitumor agents .   Molecular docking.  

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