New Antibiotic Candidates against <i>Helicobacter pylori</i>
作者:Shanzhi Wang、Scott A. Cameron、Keith Clinch、Gary B. Evans、Zhimeng Wu、Vern L. Schramm、Peter C. Tyler
DOI:10.1021/jacs.5b06110
日期:2015.11.18
consequence, 10 new H. pylori antibiotic candidates are identified, all of which prevent H. pylori growth at concentrations 16-2000-fold lower than the five antibiotics, amoxicillin, metronidazole, levofloxacin, tetracyclin, and clarithromycin, commonly used to treat H. pylori infections. X-ray crystal structures of MTAN cocrystallized with several inhibitors show them to bind in the activesite making interactions
[EN] TREATMENT OF HELICOBACTER PYLORI INFECTIONS<br/>[FR] TRAITEMENT DES INFECTIONS À HELICOBACTER PYLORI
申请人:EINSTEIN COLL MED
公开号:WO2014025842A1
公开(公告)日:2014-02-13
Methods of treating infections due to Helicobacter pylori (H. pylori), in particular in subjects having a peptic ulcer, are disclosed where the methods comprise administering inhibitors of H. pylori MTAN (5'-methylthioadenosine nucleosidase) to the subject.
N-heterocyclic carbene-catalyzed regio- and stereoselective hydrothiolation reaction of alkynes
作者:Zi-Song Cong、Yang Zhang、Guang-Fen Du、Cheng-Zhi Gu、Lin He
DOI:10.1080/00397911.2018.1468910
日期:2018.7.18
Abstract N-heterocyclic carbenes (NHCs) have been utilized as Brønsted base to catalyze the hydrothiolation reaction between alkynes and thiols to produce the vinyl sulfides stereoselectively. Graphical Abstract Graphical Abstract
N-Heterocyclic carbene-catalyzed stereoselective construction of olefinic carbon–sulfur bonds via cross-coupling reaction of gem-difluoroalkenes and thiols
作者:Zi-Song Cong、Yang-Guo Li、Lei Chen、Fen Xing、Guang-Fen Du、Cheng-Zhi Gu、Lin He
DOI:10.1039/c7ob00599g
日期:——
forming reaction was developed. Under the catalysis of 10 mol% stable N-heterocyclic carbene, thiols undergo direct nucleophilic substitution reaction with gem-difluoroalkenes to produce α-fluorovinyl thioethers in high yields with excellent Z-selectivity. In this process, bases are not necessary.
Herein we reported an efficient palladium-catalyzed enantioselective arylation of both alkyl and aryl sulfenate anions to deliver various chiral sulfoxides in good yields (up to 98%) with excellent enantioselectivities (up to 99% ee) by the use of our developed chiral O,P-ligands (PC-Phos). PC-Phos are easily prepared in shortsteps from inexpensive commercially available starting materials. The single-crystal