Results 31 to 40 of about 25,177 (318)
New Quinoxalines with Biological Applications [PDF]
, 2014 In search of alternatives to antimicrobial agents currently in use, and in order to respond to the landscape of loss of efficacy due to the emergence of resistance, several research groups are evaluating several familiesof compounds, among them the ...
Fernandes, Rúben +3 more
core +1 more source
Dual Allosteric Effect in Glycine/NMDA Receptor Antagonism: A Comparative QSAR Approach
Pharmaceuticals, 2010 A comparative Hantzsch type QSAR study was conducted using multiple regression analysis on various sets of quinoxalines, quinoxalin-4-ones, quinazoline-2-carboxylates, 4-hydroxyquinolin-2(1H)-ones, 2-carboxytetrahydroquinolines, phenyl-hydroxy-quinolones,
Vipin B. Gupta, Manish Sharma
doaj +1 more source
2-(4-Chloroanilino)quinoxaline [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 There are two mol-ecules in the asymmetric unit of the title compound, C(14)H(10)ClN(3), with dihedral angles of 5.11 (10) and 13.61 (10)° between the aromatic ring systems. In the crystal structure, mol-ecules are linked by N-H⋯N hydrogen bonds, resulting in chains propagating in [010].
Seik Weng Ng +4 more
openaire +4 more sources
Molecules, 2009 The reaction of 3-mercaptopropylsilica (MPS) and chlorosulfonic acid in chloroform afforded silica bonded S-sulfonic acid (SBSSA), which was used as a catalyst for the room temperature synthesis of quinoxaline derivatives from 1,2-diamino compounds and 1,
Khodabakhsh Niknam +2 more
doaj +1 more source
Molecules, 2014 10-Ethyl-7-oxo-7,10-dihydropyrido[2,3-f]quinoxaline derivatives, synthesized as promising biologically/photobiologically active compounds were characterized by UV/vis, FT-IR and fluorescent spectroscopy.
Zuzana Barbieriková +5 more
doaj +1 more source
A Convenient Way to Quinoxaline Derivatives through the Reaction of 2-(3-Oxoindolin-2-yl)-2-phenylacetonitriles with Benzene-1,2-diamines [PDF]
, 2022 Microwave-assisted reaction between 2-(3-oxoindolin-2-yl)-2-phenylacetonitriles andbenzene-1,2-diamines leads to the high-yielding formation of the corresponding quinoxalines as sole, easily isolaable products.
Aksenov, Alexander V. +8 more
core +1 more source
Indion 190 resin: Reusable catalyst for the synthesis of quinoxalines and pyrido-pyrazines at ambient temperature [PDF]
, 2013 An efficient method for synthesis of quinoxalines and substituted pyrido-pyrazines has been developed from different 1,2-dicarbonyl compounds and substituted 1,2-diamines using Indion 190 resin as a solid acid catalyst.
Deshpande, Shruti Shashank +3 more
core +1 more source
Mo–Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties [PDF]
, 2021 A catalytic domino reduction–imine formation– intramolecular cyclization–oxidation for the general synthesis of a wide variety of biologically relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is ...
Fernández Rodríguez, Manuel A. +6 more
core +1 more source
, 2023 Quinoxalines are a group of antibiotics widely used in medicine to fight bacterial infections.These antibiotics have a broad spectrum of action and belong to the class of 4 quinolones. Theirmechanism of action is based on inhibiting the activity of bacterial enzymes responsible for DNAsynthesis, which leads to their death. Due to this, quinoxalines are
openaire +1 more source
2-(3-Nitrophenoxy)quinoxaline [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the title mol-ecule, C(14)H(9)N(3)O(3), the dihedral angle between the quinoxaline and benzene rings is 77.13 (9)°. The mol-ecule is twisted about the ether-benzene O-C bond, with a C-O-C-C torsion angle of -102.8 (2)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers in the ab plane, with one nitro O atom accepting two ...
Hassan, N.D. +5 more
openaire +4 more sources