Results 31 to 40 of about 29,062 (270)

3-Methyl-1-(prop-2-en-1-yl)quinoxalin-2(1H)-one

Acta Crystallographica Section E, 2010
In the molecule of the title compound, C12H12N2O, the quinoxaline ring is planar with an r.m.s. deviation of 0.007 (15) Å. The dihedral angle between the quinoxaline and propenyl planes is 82.1 (2)°.
Youssef Ramli, Rachid Slimani, Hafid Zouihri, Saïd Lazar, E. M. Essassi   +4 more
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SYNTHESIS OF QUINOXALINES

, 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

Quinoxaline Derivatives as Antiviral Agents: A Systematic Review

Molecules, 2020
Background: In recent decades, several viruses have jumped from animals to humans, triggering sizable outbreaks. The current unprecedent outbreak SARS-COV-2 is prompting a search for new cost-effective therapies to combat this deadly pathogen.
Marc Montana, Vincent Montero, Omar Khoumeri, Patrice Vanelle   +3 more
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Push–Pull Derivatives Based on 2,4′-Biphenylene Linker with Quinoxaline, [1,2,5]Oxadiazolo[3,4-B]Pyrazine and [1,2,5]Thiadiazolo[3,4-B]Pyrazine Electron Withdrawing Parts

Molecules, 2022
A series of novel V-shaped quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine push–pull derivatives with 2,4′-biphenylene linker were designed and their electrochemical, photophysical and nonlinear optical properties were
Egor V. Verbitskiy, Pascal le Poul, Filip Bureš, Sylvain Achelle, Alberto Barsella, Yuriy A. Kvashnin, Gennady L. Rusinov, Valery N. Charushin   +7 more
doaj   +1 more source

Diazanaphthalenes: A 13C NMR investigation on the site of protonation and pKa values [PDF]

, 1976
The pH dependence of the 13C chemical shifts (δ) of the diazanaphthalenes has been recorded. From this dependence the pKa values have been determined using the Henderson-Hasselbach equation.
Meer, Douwe van der, Thijsse, Hans, Weijer, Peter van de   +2 more
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Quinoxaline, its derivatives and applications: a state of the art review [PDF]

, 2014
Quinoxaline derivatives are an important class of heterocycle compounds, where N replaces some carbon atoms in the ring of naphthalene. Its molecular formula is C8H6N2, formed by the fusion of two aromatic rings, benzene and pyrazine.
Cordeiro, M. Natália D. S., Fernandes, Ruben, Noronha, Joao Paulo, Pereira, Joana A., Pessoa, Ana S. Moura, Prudencio, Cristina, Vieira, Mónica   +6 more
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Mft1, identified from a genome-wide screen of the yeast haploid mutants, mediates cell cycle arrest to counteract quinoxaline-induced toxicity

Frontiers in Genetics
Quinoxaline is a heterocyclic compound with a two-membered ring structure that undergoes redox cycling to produce toxic free radicals. It has antiviral, antibacterial, antifungal, and antitumor activities.
Abdallah Alhaj Sulaiman, Dana E. Al-Ansari, Dana E. Al-Ansari, Reem Ali, Mustapha Aouida, Dindial Ramotar   +5 more
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Analgesic and anti-inflammatory activity of quinoxaline derivatives: Design synthesis and characterization

Results in Chemistry, 2023
Medicinal chemistry is a basic science that involves identification, synthesis and development of new drugs for therapeutic use. Biological importance of heterocycles makes them more crucial in pharmaceutical industries.In this work heterocyclics like ...
Geethavani Meka, Ramakrishna Chintakunta
doaj  

Quinoxaline:Z′ = 1 form [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
A new Z' = 1 crystal structure of quinoxaline (or 1,4-diaza-naphthalene), C(8)H(6)N(2), with one-fifth the volume of the earlier known Z' = 5 structure was obtained by means of an in situ cryocrystallization technique.
Ranganathan, Sathishkumar, Mahapatra, Sudarshan, Thakur, Tejender S, Desiraju, Gautam R   +3 more
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the very different redox behaviour of isoelectronic complexes with [PtCl2] and [AuCl2]+ [PDF]

, 2011
The new, potentially ambidentate heterocyclic ligand 2,3-bis(1-methylimidazol-2-yl)quinoxaline (bmiq) was obtained from 2,3-bis(1-methylimidazol-2-yl)glyoxal and 1,2-diaminobenzene.
Bulak, Ece, Fiedlerc, Jan, Hartenbach, Ingo, Kaim, Wolfgang, Sarkar, Biprajit, Schwederski, Brigitte, Varnali, Tereza   +6 more
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