Es wird die Synthese einiger O-substituierter 4-Chinolinole und 5,6,7,8-Tetrahydro-4-chinolinole 7–13 beschrieben. Ausgehend von 2 und 4 gelangt man mit POCl3 zu 4-Chlorchinolinen 14 und 15, welche in die 4-Aryloxychinoline 16 und 17 sowie 4-Alkyl-(Aryl-)thiochinoline 20 bzw. 4-Aminochinoline 21 übergeführt werden.
Gold-Catalyzed Conversion of Aryl- and Alkyl-Substituted 1-(<i>o</i>-Aminophenyl)-2-propyn-1-ones to the Corresponding 2-Substituted 4-Quinolones
作者:Otto Seppänen、Mikko Muuronen、Juho Helaja
DOI:10.1002/ejoc.201402224
日期:2014.7
Gold-catalyzed cyclization of alkyl- or aryl-substituted 1-(o-aminophenyl)-2-propyn-1-ones to the corresponding2-substituted 4-quinolones was studied with various gold salts and complexes. Screening of the different catalysts showed highest performance with cationic AuI species. In particular PPh3AuNTf2 complex was the most efficient catalyst. Relative to classic quinolone synthesis that requires harsh
Biosynthesis of 2-Alkyl-4(1H)-Quinolones in Pseudomonas aeruginosa: Potential for Therapeutic Interference with Pathogenicity
作者:Dominik Pistorius、Angelika Ullrich、Simon Lucas、Rolf W. Hartmann、Uli Kazmaier、Rolf Müller
DOI:10.1002/cbic.201100014
日期:2011.4.11
Targeting quorum sensing: The Pseudomonas quinolone signal (PQS) and its direct precursor HHQ are important quorum‐sensing signal molecules in P. aeruginosa that contribute to the pathogenicity of this bacterium. In vitro reconstitution of HHQ biosynthesis employing recombinant PqsD protein has shed light on this enzyme and its substrates, and led to a test system for identifying inhibitors.
Biphenyl sulfonamides as dual angiotensin endothelin receptor antagonists
申请人:Bristol-Myers Squibb Company
公开号:EP1741713A2
公开(公告)日:2007-01-10
Novel biphenyl sulfonamide compounds which are combined angiotensin and endothelin receptor antagonists are claimed along with methods of using such compounds in the treatment of conditions such as hypertension and other diseases, as well as pharmaceutical compositions containing such compounds.
New nonpeptide angiotensin II receptor antagonists. 2. Synthesis, biological properties, and structure-activity relationships of 2-alkyl-4-(biphenylylmethoxy)quinoline derivatives
作者:Robert H. Bradbury、Christopher P. Allott、Michael Dennis、Eric Fisher、John S. Major、Brian B. Masek、Alec A. Oldham、Robert J. Pearce、Neil Rankine
DOI:10.1021/jm00100a007
日期:1992.10
A novel series of nonpeptidic angiotensin II (AII) receptor antagonists is reported, derived from linkage of the biphenylcarboxylic acid or biphenylyltetrazole moiety found in previously described antagonists via a methyleneoxy chain to the 4-position of a 2-alkyl quinoline. When evaluated in an in vitro binding assay using a guinea pig adrenal membrane preparation, compounds in this series generally gave IC50 values in the range 0.01-1 muM. Structure-activity studies showed the quinoline nitrogen atom and a short alkyl chain at the quinoline 2-position to be essential for receptor binding. On intravenous administration in a normotensive rat model, the more potent compounds inhibited the AII-induced pressor response with ED50 values in the range 0.1-2.0 mg/kg. One of the compounds, 2-ethyl-4-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methoxy]quinoline (5g), demonstrated good oral activity in two rat models. At doses in the range 1-10 mg/kg in AII-infused, normotensive rats, the compound exhibited a dose-related inhibition of the pressor response with a good duration of action at the higher doses. In a renal hypertensive rat model, compound 5g showed a rapid and sustained lowering of blood pressure at a dose of 5 mg/kg. On the basis of its profile, this compound, designated ICID8731, has been selected for clinical evaluation.