Results 131 to 140 of about 3,612 (183)

A structural blueprint for antibacterial discovery: microwave- and ultrasound-assisted synthesis of pyrrolidine-fused quinoxalines as novel inhibitors of DNA gyrase and biofilm. [PDF]

RSC Adv
Fayed EA, Najm MAA, Abdelglil MI, Ramsis TM, Gohar NA, Metwally SA, Ebrahim MA.   +6 more
europepmc   +1 more source

Bronsted and Lewis Acid-Catalyzed Diverse Functionalization of Indenoquinoxaline-11-Propargyl Alcohols: Synthesis of 4‑Indeno-quinoxalinylidene-2,3-diarylcyclobutenone, 1,2-Dimethoxy-2-Aryl-ethylideneindenoquinoxaline, and 2‑Methoxy-1-phenyldiaza-benzocyclopentafluorenes. [PDF]

ACS Omega
Padmashrija AJC, Preethi RK, Kannadasan S, Shanmugam P.   +3 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Quinoxaline derivatives with broadened absorption patterns

Organic & Biomolecular Chemistry, 2013
Quinoxaline-based semiconducting materials are currently of high interest in the field of organic photovoltaics. The number of structural variations employed has been, however, quite limited to date. In this paper we report on the synthesis of a series of quinoxaline monomers and triads with improved optical features.
Lidia, Marin, Laurence, Lutsen, Dirk, Vanderzande, Wouter, Maes   +3 more
openaire   +2 more sources

Quinoxaline derivatives—III

Tetrahedron, 1964
Abstract Base catalysed intramolecular cyclization of α-cyano- o -nitroacetanilides (Ia–d) to the corresponding 2-cyano-3-hydroxyquinoxaline 1-oxides (IIa-d) is described, and a mechanism proposed. The cyanoquinoxaline N-oxides (IIa-d) on reduction are deoxygenated with simultaneous loss of the nitrile group, and when heated with concentrated aqueous
Yusuf Ahmad, M.S. Habib, null Ziauddin
openaire   +1 more source

Synthesis of new quinoxaline derivatives

Russian Journal of Organic Chemistry, 2012
Proceeding from 2-aminoquinoxaline-3-carbonitrile 1,4-dioxides new derivatives of quinoxaline and quinoxaline 1,4-dioxide were synthesized containing in the position 3 of the quinoxaline fragment 1,2,4-oxadiazole and tetrazole rings. The acylation of 2-amino-N′-hydroxyquinoxaline-3-carbox imidoamide 1,4-dioxide was investigated.
O. B. Laskina, S. F. Mel’nikova, I. V. Tselinskii   +2 more
openaire   +1 more source

Synthesis of New Quinoxaline Derivatives

Synthetic Communications, 2011
Abstract New quinoxaline derivatives were prepared by the reaction of 2-hydroxyquinoxaline 1 and alkyl or alkylaminoalkyl halides in dimethylformamide using potassium carbonate as a base. The hydroxyl group was readily converted into a thiol function by treatment with phosphorus pentasulfide and/or Lawesson's reagent in pyridine, and the subsequent ...
A. Makhloufi, M. Baitiche, M. Merbah, D. Benachour   +3 more
openaire   +1 more source

Quinoxaline derivatives: a patent review (2006 – present)

Expert Opinion on Therapeutic Patents, 2012
Quinoxaline scaffold is included in a large number of therapeutic agents because of its physicochemical properties that make the difference between them and the carbono analogue, naphthalene.This review of patented products presents the quinoxaline heterocycle as part of the structural patent claims from a medicinal chemistry perspective.We centred our
Mercedes, González, Hugo, Cerecetto
openaire   +2 more sources

Quinoxaline derivatives of severalalkaloids

Chemistry of Natural Compounds, 2010
New quinoxaline derivatives were prepared by reaction of 2-quinoxalinehydroximoylbromide with the alkaloids anabasine, cytisine, and salsoline.
openaire   +1 more source

Quinoxaline Derivatives: Novel and Selective Butyrylcholinesterase Inhibitors

Medicinal Chemistry, 2014
Alzheimer's disease (AD) is a progressive brain disorder which occurs due to lower levels of acetylcholine (ACh) neurotransmitters, and results in a gradual decline in memory and other cognitive processes. Acetycholinesterase (AChE) and butyrylcholinesterase (BChE) are considered to be primary regulators of the ACh levels in the brain.
Aurang, Zeb, Abdul, Hameed, Latifullah, Khan, Imran, Khan, Kourosh, Dalvandi, M Iqbal, Choudhary, Fatima Z, Basha   +6 more
openaire   +2 more sources

Biological Activity of Quinoxaline Derivatives

2011
Quinoxaline derivatives constitute an important class of heterocycles in drug discovery. They areclinically effective as antibacterial, antifungal, anti-inflammatory, anticancer, anti-tubercular andantineoplastic agents. Interestingly, it also shows hypoglycemic and antiglaucoma activity.Modification in their structure has offered a high degree of ...
Yadav Deepika, Pandeya Surendra Nath, Kumar Sachin, Sinha Shewta   +3 more
openaire   +1 more source