Results 101 to 110 of about 5,642 (192)

Application of 1-(4-Tolyl)-2-methyl-3-hydroxy-4-pyridone for the Extraction and Spectrophotometric Determination of Iron(III) [PDF]

open access: yes, 1974
The application of 1-(4-tolyl)-2-methyl-3-hydroxy-4-pyridone (HY) to the extraction and spectrophotometric determination of iron (III) are described. In the aqueous phase iron (III) and HY form two different complexes; FeY2+ and FeY2+, depending on the ...
B. Tamhina, M . J. Herak
core   +1 more source

Synthesis, Detection, and Metabolism of Pyridone Ribosides, Products of NAD Overoxidation. [PDF]

open access: yes
Pyridone-containing adenine dinucleotides, ox-NAD, are formed by overoxidation of nicotinamide adenine dinucleotide (NAD+) and exist in three distinct isomeric forms. Like the canonical nucleosides, the corresponding pyridone-containing nucleosides (PYR)
Bryan, Ru   +8 more
core   +1 more source

4-(4-Chlorophenyl)-6-phenyl-2-(prop-2-yn-1-yloxy)nicotinonitrile

open access: yesMolbank
We report an efficient and transition-metal-free protocol for the propargylation of 4-(4-chlorophenyl)-2-oxo-6-phenyl-1,2-dihydropyridine-3-carbonitrile using propargyl bromide in the presence of cesium carbonate in dimethylsulfoxide under mild ...
Diana Becerra   +2 more
doaj   +1 more source

Extraction and Spectrophotometric Determination of Iron(III) by 1-phenyl-2-methyl-3-hydroxy-4-pyridone [PDF]

open access: yes, 1973
The extraction and spectrophotometric determination of iron (III) by 1-phenyl-2-methyl-3-hyd:roxy-4-pyridone (HX) are described. At pH > 1.5 97°/o of the iron(III) can be extracted.
B. Tamhina, M. J. Herak
core   +1 more source

Application of 1-(4-Tolyl)-2-methyl-3-hydroxy-4-pyridone to the Spectrophotometric Determination of Vanadium(V) [PDF]

open access: yes, 1976
The application of 1-(4-tolyl)-2-methyl-3-hydroxy-4-
B. Tamhina, M. J. Herak, V. Vojković
core   +1 more source

ORGANOCUPRATE MEDIATED SYNTHESES OF O, AND N-HETEROCYCLES [PDF]

open access: yes, 2009
The δ-lactone moiety comprises structural subunits in a number of natural products. Highly substituted δ-lactones are important both in synthetic applications and also as naturally occurring compounds.
Guo, Fenghai
core   +1 more source

SYNTHESIS OF ?-PYRONEIMINE N-OXIDE A NOVEL NITRONE WITH ELECTRON RELEASING SUBSTITUENT [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1997
N-Oxidation of 1,4-dihydro-2,6-dimethyl-1- phenyliminopyridine (7) with several peracids was attempted. The main compound obtained was l-phenyl- 2,6-dimethyl-4-pyridone (8), instead of the expected N-oxide (2).
doaj  

Simultaneous Determination of Palladium(II) and Gold(III) in Mixtures by Third Derivative Spectrophotometry Using 3-Hydroxy-2-methyl-1-phenyl-4-pyridone Ligand [PDF]

open access: yes, 2003
A spectrophotometric method has been developed for the determination of microgram amounts of palladium(II). The method is based on the extraction of palladium(II) by a chloroform solution containing 3-hydroxy-2-methyl-1-phenyl-4-pyridone (HX).
Vinka Drušković, Vlasta Vojković
core   +1 more source

Time-restricted feeding ameliorates non-alcoholic fatty liver disease through modulating hepatic nicotinamide metabolism via gut microbiota remodeling

open access: yesGut Microbes
Non-alcoholic fatty liver disease (NAFLD) has emerged as a global health concern, lacking specific therapeutic strategies. Time-restricted feeding (TRF) regimen demonstrated beneficial effects in NAFLD; however, the underlying mechanisms remain unclear ...
Ruijia Feng   +13 more
doaj   +1 more source

New functionalisation chemistry of 2- and 4-pyridones and related heterocycles [PDF]

open access: yes, 2016
New methodology for the synthesis of several 4H-pyrido[1,2-a]pyrimidin-4-ones has been developed from commercially available 2-aminopyridines and β-oxo esters catalysed by Montmorillonite under solvent-free conditions in good yields. This methodology was
Beatriz Fernandez (5781758)
core  

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