Results 81 to 90 of about 12,753,193 (203)

2-Pyridone-based fluorophores containing 4-dialkylamino-phenyl group: Synthesis and fluorescence properties in solutions and in solid state

open access: yes, 2016
Novel highly emissive 2-pyridone-based compounds 3a,b and 4a–d were synthesized by a convenient one-pot method from 4-(dialkylamino)acetophenones (1a,b) and cyanoketene dithioacetal (2a) or sulfonyl ketene dithioacetals (2b,c), and their fluorescence ...
Wang, Bo-cheng; Tai, Chen-kuen; Wang, San-lang; Shih, Tzenge-lien; Wu, Kuen-da; Huang, Zhi-shuan; Tseng, Shih-chuw; Lu, Jian-wei; Wei, Ho-hsiang
core   +1 more source

Design, Synthesis and Anti-fibrosis Activity Study of N1-Substituted Phenylhydroquinolinone Derivatives

open access: yesMolecules, 2012
Pirfenidone (5-methyl-1-phenyl-2(1H)-pyridone, PFD) is a small-molecule compound acting on multiple targets involved in pathological fibrogenesis and is effective to increase the survival of patients with fibrosis, such as idiopathic pulmonary fibrosis ...
Jun Chen   +5 more
doaj   +1 more source

Iridium‐Catalyzed Ionic Hydrogenation of Multi‐Aza Heterocycles

open access: yesAngewandte Chemie, Volume 138, Issue 35, 24 August 2026.
Saturated nitrogen‐containing heterocycles are ubiquitous in bioactive molecules and are thus attractive synthetic targets. A readily accessible cyclometalated iridium(III) complex reduces 14 different aromatic aza heterocycles to (partially)saturated multi aza‐heterocycles enlarging accessible chemical space while displaying high tolerance toward ...
Arthur Despois, Nicolai Cramer
wiley   +1 more source

6-Bromo-1-[2-(2-oxo-1,3-oxazolidin-3-yl)ethyl]-1H-imidazo[4,5-b]pyridin-2(3H)-one

open access: yesActa Crystallographica Section E, 2010
The title compound, C11H11BrN4O3, features an ethane fragment substituted with an almost planar (r.m.s. deviation = 0.019 Å) imidazo[4,5-b]pyridone ring system and an envelope-shaped oxazolidine unit on separate C atoms.
H. Bel-Ghacham   +4 more
doaj   +1 more source

Synthesis of 2-Pyridone Derivatives Bearing an Electron-withdrawing Group on Nitrogen [PDF]

open access: yes, 2007
1-Protected 2(1H)-pyridones are highly useful dienophiles because Diels-Alder reaction of 1-sulfonyl-2(1H)-pyridones gave the synthetic intermediate such as quinoline and isoquinoline derivatives.
渡邉, 一弘   +8 more
core  

Major Constituents of the Predominant Endophytic Fungi from the Nigerian Plants and

open access: yesNatural Product Communications, 2008
In a chemical screening of fungal strains endophytic to Nigerian plants, Diaporthe phaseolorum , the endophyte of Bryophyllum pinnatum , gave cytochalasin D and (3 R ,4 R )-3,4,5-trihydroxy-1-tetralone, Neurospora discreta from Morinda lucida yielded ...
Abimbola A. Sowemimo   +5 more
doaj   +1 more source

4-Pyridone-3-carboxamide-1-β-d-ribonucleoside Triphosphate (4PyTP), a Novel NAD+ Metabolite Accumulating in Erythrocytes of Uremic Children: A Biomarker for a Toxic NAD+ Analogue in Other Tissues?

open access: yesToxins, 2011
We have identified a novel nucleotide, 4-pyridone 3/5-carboxamide ribonucleoside triphosphate (4PyTP), which accumulates in human erythrocytes during renal failure.
Elizabeth A. Carrey   +5 more
doaj   +1 more source

Pyridonderivate aus 3-Amino-2H-azirinen und Cyclopropenonen

open access: yesCHIMIA, 1978
Reaction of the 3-dimethylamino-2H-azirines 1a and 1b with diphenylcyclopropenone (2a) in ether or acetonitrile leads to the 2-dimethylamino-5,6-diphenyl-4(3H)-pyridones 3a and 3b in 70 and 80% yield, respectively. The structure of these 1:1-adducts has
Stanislav Chaloupka, Heinz Heimgartner
doaj   +1 more source

4-Pyridone-3-carboxamide-1-β-D-ribonucleoside (4PYR)-A Novel Oncometabolite Modulating Cancer-Endothelial Interactions in Breast Cancer Metastasis. [PDF]

open access: yesInt J Mol Sci, 2022
Koszalka P   +7 more
europepmc   +1 more source

Synthesis of 5-(substituted phenylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones from ethyl 3-oxo-2-(substituted phenylazo)butanoates, Short communication [PDF]

open access: yesJournal of the Serbian Chemical Society, 2011
A new procedure for the synthesis of known azo pyridone dyes is presented. A series of 5-(substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridones were prepared from ethyl 3-oxo-2-(substituted phenylazo)butanoates and cyanoacetamide in acetone using ...
GORDANA UŠĆUMLIĆ   +3 more
doaj  

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