99059-83-3Relevant articles and documents
Virtual Screening Approach to Identifying a Novel and Tractable Series of Pseudomonas aeruginosa Elastase Inhibitors
Leiris, Simon,Davies, David T.,Sprynski, Nicolas,Castandet, Jér?me,Beyria, Lilha,Bodnarchuk, Michael S.,Sutton, Jonathan M.,Mullins, Toby M. G.,Jones, Mark W.,Forrest, Andrew K.,Pallin, T. David,Karunakar, Paduri,Martha, Sathish Kumar,Parusharamulu, Battu,Ramula, Ramesh,Kotha, Venkatesh,Pottabathini, Narender,Pothukanuri, Srinivasu,Lemonnier, Marc,Everett, Martin
supporting information, p. 217 - 227 (2021/02/01)
Novel therapies are required to treat chronic bacterial infections in cystic fibrosis (CF) sufferers. The most common pathogen responsible for these infections is Pseudomonas aeruginosa, which persists within the lungs of CF sufferers despite intensive antibiotic treatment. P. aeruginosa elastase (also known as LasB or pseudolysin) is a key virulence determinant that contributes to the pathogenesis and persistence of P. aeruginosa infections in CF patients. The crucial role of LasB in pseudomonal virulence makes it a good target for the development of an adjuvant drug for CF treatment. Herein we discuss the discovery of a new series of LasB inhibitors by virtual screening and computer assisted drug design (CADD) and their optimization leading to compounds 29 and 39 (Ki = 0.16 μM and 0.12 μM, respectively).
Primary amines by transfer hydrogenative reductive amination of ketones by using cyclometalated IrIII catalysts
Talwar, Dinesh,Salguero, Noemi Poyatos,Robertson, Craig M.,Xiao, Jianliang
supporting information, p. 245 - 252 (2014/01/17)
Cyclometalated iridium complexes are found to be versatile catalysts for the direct reductive amination (DRA) of carbonyls to give primary amines under transfer-hydrogenation conditions with ammonium formate as both the nitrogen and hydrogen source. These complexes are easy to synthesise and their ligands can be easily tuned. The activity and chemoselectivity of the catalyst towards primary amines is excellent, with a substrate to catalyst ratio (S/C) of 1000 being feasible. Both aromatic and aliphatic primary amines were obtained in high yields. Moreover, a first example of homogeneously catalysed transfer-hydrogenative DRA has been realised for β-keto ethers, leading to the corresponding β-amino ethers. In addition, non-natural α-amino acids could also be obtained in excellent yields with this method. Reduce the work! A broad range of ketones have been successfully aminated to afford primary amines under transfer-hydrogenation conditions by using ammonium formate as the amine source and 0.1 mol % of a cyclometalated IrIII catalyst (see scheme). Copyright
Chemoenzymatic preparation of 1-heteroarylethanamines of low solubility
Brem, Juergen,Bencze, Laszlo-Csaba,Liljeblad, Arto,Turcu, Mihaela C.,Paizs, Csaba,Irimie, Florin-Dan,Kanerva, Liisa T.
scheme or table, p. 3288 - 3294 (2012/07/02)
Both enantiomers of biologically and pharmaceutically interesting benzofuran-, benzothiophen-, and phenylfuran-based 1-heteroarylethanamines were prepared at close to theoretical yields by using Candida antarctica lipase B (Novozym 435) catalyzed (R)-selective N-acylation with isopropyl butanoate (enantiomeric ratio E > 200). The use of N-methyl-2-pyrrolidinone (NMP) as a cosolvent (1:30) in isopropyl butanoate solved the problem of low solubility of the compounds. Instability of the heterocyclic ring systems against traditional acid- and base-catalyzed hydrolysis was solved by using Candida antarctica lipase A as a commercial CAL-A-CLEA preparation for deprotection of the N-acylated (R) enantiomers in water. The slow, highly enantioselective (E > 200) hydrolyses of racemic butanamides was also observed in the presence of Novozym 435. Copyright
