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
A condition-tuned unorthodox approach to indole-3-carboxylic acids and anthranilic acids <i>via</i> carbon atom translocation
作者:Arup Bhowmik、Koushik Naskar、Shantonu Roy、Sudip Karmakar、Writhabrata Sarkar、Imtiaj Mondal、Arindam Sana、Indubhusan Deb
DOI:10.1039/d3cc04443b
日期:——
one-pot cascade method for the synthesis of indole-3-carboxylic acids using isatins and DMSO via a one-carbon translocation involving in situ generation of α,β-unsaturated methylvinylsulfoxide followed by amide bond cleavage and ring closure. The methodology has been extended to afford anthranilicacid derivatives by tuning the reaction conditions in the presence of molecular oxygen. Importantly, easy
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.
KHALIFA, M.;OSMAN, A. N.;IBRAHIM, M. G.;OSSMAN, A. -R. E.;ISMAIL, M. A., PHARMAZIE, 1982, 37, N 2, 115-117
作者:KHALIFA, M.、OSMAN, A. N.、IBRAHIM, M. G.、OSSMAN, A. -R. E.、ISMAIL, M. A.
DOI:——
日期:——
KHALIFA, M.;OSMAN, A. N.;IBRAHIM, M. G.;OSSMAN, A. E.;ISMAIL, M. A., EGYPT. J. CHEM., 1982, 25, N 3, 285-291
作者:KHALIFA, M.、OSMAN, A. N.、IBRAHIM, M. G.、OSSMAN, A. E.、ISMAIL, M. A.