A Fragment-Based Method to Discover Irreversible Covalent Inhibitors of Cysteine Proteases
作者:Stefan G. Kathman、Ziyang Xu、Alexander V. Statsyuk
DOI:10.1021/jm500345q
日期:2014.6.12
reported which irreversibly tethers drug-like fragments to catalytic cysteines. We attached an electrophile to 100 fragments without significant alterations in the reactivity of the electrophile. A mass spectrometry assay discovered three nonpeptidic inhibitors of the cysteineprotease papain. The identified compounds display the characteristics of irreversibleinhibitors. The irreversible tethering system
Identification of non-peptidic cysteine reactive fragments as inhibitors of cysteine protease rhodesain
作者:Danielle McShan、Stefan Kathman、Brittiney Lowe、Ziyang Xu、Jennifer Zhan、Alexander Statsyuk、Ifedayo Victor Ogungbe
DOI:10.1016/j.bmcl.2015.08.074
日期:2015.10
Rhodesain, the major cathepsin L-like cysteine protease in the protozoan Trypanosoma brucei rhodesiense, the causative agent of African sleeping sickness, is a well-validated drug target. In this work, we used a fragment-based approach to identify inhibitors of this cysteine protease, and identified inhibitors of T. brucei. To discover inhibitors active against rhodesain and T. brucei, we screened a library of covalent fragments against rhodesain and conducted preliminary SAR studies. We envision that in vitro enzymatic assays will further expand the use of the covalent tethering method, a simple fragment-based drug discovery technique to discover covalent drug leads. (C) 2015 Elsevier Ltd. All rights reserved.
The Dynamic Kinetic Resolution of Azlactones with Thiol Nucleophiles Catalyzed by Arylated, Deoxygenated Cinchona Alkaloids
作者:Zaida Rodríguez-Docampo、Cormac Quigley、Sean Tallon、Stephen J. Connon
DOI:10.1021/jo202662d
日期:2012.3.2
A significant improvement of the available organocatalytic methods (in terms of product substrate scope and product enantiomeric excess) for the generation of enantioenriched alpha-amino acid thioesters via the dynamic kinetic resolution of azlactones is reported. C-9 arylated cinchona alkaloid catalysts have been found to be considerably superior to other bifunctional alkaloid catalysts as the promoters of this asymmetric process.
4‐Sulfamoylphenylalkylamides as Inhibitors of Carbonic Anhydrases Expressed in
<i>Vibrio cholerae</i>
作者:Francesca Mancuso、Laura De Luca、Federica Bucolo、Milan Vrabel、Andrea Angeli、Clemente Capasso、Claudiu T. Supuran、Rosaria Gitto
DOI:10.1002/cmdc.202100510
日期:2021.12.14
Design in the time of cholera: Carbonicanhydrases (CAs) catalyze the reversible hydration of CO2 in Vibrio cholerae, so VchCAs are attractive targets for the treatment of cholera. A structure-inspired drugdesign of benzenesulfonamides led to identification of potent and selective VChCAα and VChCAγ inhibitors as potential antimicrobial agents. Further studies might furnish insight into the future