1135-00-8Relevant academic research and scientific papers
Deconstructing Noncovalent Kelch-like ECH-Associated Protein 1 (Keap1) Inhibitors into Fragments to Reconstruct New Potent Compounds
Pallesen, Jakob S.,Narayanan, Dilip,Tran, Kim T.,Solbak, Sara M. ?.,Marseglia, Giuseppe,S?rensen, Louis M. E.,H?j, Lars J.,Munafò, Federico,Carmona, Rosa M. C.,Garcia, Anthony D.,Desu, Haritha L.,Brambilla, Roberta,Johansen, Tommy N.,Popowicz, Grzegorz M.,Sattler, Michael,Gajhede, Michael,Bach, Anders
supporting information, p. 4623 - 4661 (2021/05/07)
Targeting the protein-protein interaction (PPI) between nuclear factor erythroid 2-related factor 2 (Nrf2) and Kelch-like ECH-associated protein 1 (Keap1) is a potential therapeutic strategy to control diseases involving oxidative stress. Here, six classes of known small-molecule Keap1-Nrf2 PPI inhibitors were dissected into 77 fragments in a fragment-based deconstruction reconstruction (FBDR) study and tested in four orthogonal assays. This gave 17 fragment hits of which six were shown by X-ray crystallography to bind in the Keap1 Kelch binding pocket. Two hits were merged into compound 8 with a 220-380-fold stronger affinity (Ki = 16 μM) relative to the parent fragments. Systematic optimization resulted in several novel analogues with Ki values of 0.04-0.5 μM, binding modes determined by X-ray crystallography, and enhanced microsomal stability. This demonstrates how FBDR can be used to find new fragment hits, elucidate important ligand-protein interactions, and identify new potent inhibitors of the Keap1-Nrf2 PPI.
Boron trichloride as an efficient and selective agent for deprotection of tert-butyl aryl sulfonamides
Wan, Yiqian,Wu, Xiongyu,Kannan, Mahalingam A.,Alterman, Mathias
, p. 4523 - 4525 (2007/10/03)
A fast, mild and selective method for deprotection of tert-butyl aryl sulfonamides utilizing BCl3 as deprotection reagent has been developed. A variety of tert-butyl aryl sulfonamides used under these conditions gave the corresponding primary sulfonamides in high yields. The method does not cleave methoxy groups and prevents incorporation of tert-butyl groups onto electron-rich aromatic rings.
Catalytic Properties of Carbonyl Reductase from Rabbit Kidney for Acetohexamide and Its Analogs
Imamura, Yorishige,Higuchi, Toshiyuki,Otagiri, Masaki,Nagumo, Shinji,Akita, Hiroyuki
, p. 387 - 394 (2007/10/02)
Analogs submitted by ethyl, n-propyl, n-butyl, and isopropyl groups instead of methyl group adjacent to a ketone group of acetohexamide were synthesized and the structural requirements of carbonyl reductase from rabbit kidney for these analogs were kineti
Process for the production of benzenesulfonamides
-
, (2008/06/13)
Process comprises the combination of two steps of interacting a R-benzene, sulfuric acid and phosphorus oxychloride to obtain 4-R-benzenesulfonyl chloride and amidating said sulfonyl chloride to produce 4-R-benzenesulfonamide.
