structural modifications changed the selectivity profile of the analogues from hCA IV to hCA I and II, and improved potency. Several of the new compounds showed subnanomolar activity on hCA II. X-ray crystallography of ligand-hCAII complexes was used to compare the binding modes of the new piperazines and the previously synthesized 2-benzyl-piperazine analogues, explaining the inhibition profiles.
Seeking new approach for therapeutic treatment of cholera disease via inhibition of bacterial carbonic anhydrases: experimental and theoretical studies for sixteen benzenesulfonamide derivatives
作者:Rosaria Gitto、Laura De Luca、Francesca Mancuso、Sonia Del Prete、Daniela Vullo、Claudiu T. Supuran、Clemente Capasso
DOI:10.1080/14756366.2019.1618292
日期:2019.1.1
A series of sixteen benzenesulfonamide derivatives has been synthesised and tested as inhibitors of Vibrio cholerae carbonic anhydrase (CA) enzymes, belonging to alpha-CA, beta-CA, and gamma-CA classes (VchCA alpha, VchCA beta, and VchCA gamma). The determined K-i values were compared to those of selected human CA isoforms (hCA I and hCA II). Structure-affinity relationship analysis highlighted that all tested compounds proved to be active inhibitors of VchCA alpha at nanomolar concentration. The VchCA beta activity was lower to respect inhibitory efficacy toward VchCA alpha, whereas, these benzenesulfonamide derivatives failed to inhibit VchCA gamma. Interestingly, compound 7e combined the best activity toward VchCA alpha and VchCA beta. In order to obtain a model for binding mode of our inhibitors toward bacterial CAs, we carried out docking simulations by using the available crystal structures of VchCA beta.[GRAPHICS].
Exploring structural properties of potent human carbonic anhydrase inhibitors bearing a 4-(cycloalkylamino-1-carbonyl)benzenesulfonamide moiety
作者:Maria Rosa Buemi、Anna Di Fiore、Laura De Luca、Andrea Angeli、Francesca Mancuso、Stefania Ferro、Simona Maria Monti、Martina Buonanno、Emilio Russo、Giovanbattista De Sarro、Giuseppina De Simone、Claudiu T. Supuran、Rosaria Gitto
DOI:10.1016/j.ejmech.2018.11.073
日期:2019.2
the crystal structure of 4-(3,4-dihydroquinolin-1(2H)-ylcarbonyl)benzenesulfonamide 3 in complex with hCA II (PDB code 4Z0Q), a novel series of cycloalkylamino-1-carbonylbenzenesulfonamides was designed and synthesized. Thus, we replaced the quinoline ring with an azepine/piperidine/piperazine nucleus and introduced further modifications on cycloalkylamine nucleus by means the installation of hydrophobic/hydrophilic