Results 91 to 100 of about 5,642 (192)

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  

Studies on 4-Pyrones and 4-Pyridones. III. The Preparation of Some New 5-Hydroxy-1-aryl-4-pyridone-2-carboxylic Acids and Related Compounds [PDF]

open access: yes, 1966
By condensation of meconic acid with 4-chloroaniline, 4-bromoaniline, 3-nitroaniline and 1-naphthylamine, hitherto und esc ribed 5-hydroxy-1-a,ryl-4-piridone-2-carboxylic acids (I-IV) h ave been prepared. D ecarboxylation of the acids yielded several new
K. Blažević, V. Hahn
core   +1 more source

Toxicity of six plant extracts and two pyridone alkaloids from Ricinus communis against the malaria vector Anopheles gambiae

open access: yesParasites & Vectors, 2014
Background The African malaria vector, Anopheles gambiae s.s., is known to feed selectively on certain plants for sugar sources. However, the adaptive significance of this behaviour especially on how the extracts of such plants impact on the fitness of ...
Sabina Wangui Wachira   +7 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

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

Ekstrakcija rutenija s derivatima 4-piridona i njegovo odvajanje od rodija i paladija [PDF]

open access: yes, 2005
Formation of a yellow chelate complex of ruthenium(III) with 3-hydroxy-2-methyl-1-phenyl- -4-pyridone or 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone in the aqueous phase and extraction of the chelates in dichloromethane were used for spectrophotometric ...
Tatjana Antonić   +2 more
core   +1 more source

Chemistry of Nitroquinolones and Synthetic Application to Unnatural 1-Methyl-2-quinolone Derivatives

open access: yesMolecules, 2010
The 1-methyl-2-quinolone (MeQone) framework is often found in alkaloids and recently attention was drawn to unnatural MeQone derivatives with the aim of finding new biologically active compounds, however, low reactivity of the MeQone framework prevents ...
Nagatoshi Nishiwaki
doaj   +1 more source

An unusual nicotinamide derivative, 4-pyridone-3-carboxamide ribonucleoside (4PYR), is a novel endothelial toxin and oncometabolite. [PDF]

open access: yesExp Mol Med, 2021
Mierzejewska P   +11 more
europepmc   +1 more source

Spectrophotometric Determination of Microamounts of Iridium(IV) with 3-Hydroxy-2-methyl-1-phenyl-4-pyridone or 3-Hydroxy-2-methyl-1-(4-tolyl)-4-pyridone [PDF]

open access: yes, 2003
A method for the extraction and spectrophotometric determination of iridium(IV) with 3-hydroxy-2-methyl-1-phenyl-4-pyridone (HX) or 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone (HY) is described.
Vinka Drušković, Vlasta Vojković
core   +1 more source

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