Results 31 to 40 of about 7,582 (216)

Structure-Dependent Electrochemical Behavior of 2-Pyridone Derivatives: A Combined Experimental and Theoretical Study

open access: yesApplied Sciences, 2023
In this work, the electrooxidation ability of nine pyridones was evaluated using cyclic (CV) and square-wave voltammetry (SWV) in Britton–Robinson (BR) aqueous buffer solutions on a glassy carbon electrode (GC). The dependence of electrochemical activity
Aleksandra Mašulović   +6 more
doaj   +1 more source

One-pot multicomponent green synthesis of novel series of 4-hydroxy-2-pyridone-fused spiropyrans catalyzed by acetic acid

open access: yes, 2023
An efficient one-pot multicomponent reaction is reported for synthesizing a novel series 4-hydroxy-2-pyridone-fused spiropyran through the reaction of 4-hydroxy-6-methylpyridine-2-ones alkaloids, malononitrile or ethyl cyanoacetate, and ninhydrin or ...
Mahmood Kamali (16489191)   +1 more
core   +1 more source

Investigation of carbonyl amidation and O-methylation during biosynthesis of the pharmacophore pyridyl of antitumor piericidins

open access: yesSynthetic and Systems Biotechnology, 2022
Piericidins are a large family of bacterial α-pyridone antibiotics with antitumor activities such as their anti-renal carcinoma activity exhibited recently in nude mice.
Wanlu Li   +6 more
doaj   +1 more source

X-RAY PHOTOELECTRON SPECTROSCOPY INVESTIGATION OF NITROGEN TRANSFORMATION IN CHINESE OIL SHALES DURING PYROLYSIS; pp. 129–145 [PDF]

open access: yesOil Shale, 2017
X-ray photoelectron spectroscopy (XPS) was used to investigate changes in nitrogen functionalities present in Chinese Huadian (HD), Maoming (MM) and Yaojie (YJ) oil shales during pyrolysis.
QI LIU   +4 more
doaj   +1 more source

Recent Progress in Nitro-Promoted Direct Functionalization of Pyridones and Quinolones

open access: yesMolecules, 2020
Nitro group is one of the most important functional groups in organic syntheses because its strongly electron-withdrawing ability activates the scaffold, facilitating the reaction with nucleophilic reagents or the Diels−Alder reaction.
Feiyue Hao, Nagatoshi Nishiwaki
doaj   +1 more source

The Ring Transformation of 3-Methyl-5-nitropyrimidin-4(3H)-one

open access: yesMolecules, 2003
3-Methyl-5-nitropyrimidin-4(3H)-one readily reacts with carbonyl compounds to produce three kinds of ring transformations. The nitropyrimidinone behaves as the synthetic equivalent of activated diformylamine affording 3,5-difunctionalized 4-pyridones, 4 ...
Masahiro Ariga   +4 more
doaj   +1 more source

Metal‐Free Active Template: A Straightforward Route to 4‐Aminopyridinium‐Based Rotaxane Molecular Shuttles

open access: yesAngewandte Chemie, EarlyView.
Leigh's metal‐free active template‐based SNAr of an amine on halogenopyridiniums, in the presence of a crown ether, successfully afforded 4‐aminopyridinium‐containing rotaxanes. Further molecular machinery was carried out by deprotonation‐then‐carbamoylation of the conjugated amino moiety.
Ivaylo Stoyanov   +2 more
wiley   +2 more sources

CXXXI.—Benzeneazo-2-pyridone [PDF]

open access: yesJ. Chem. Soc., Trans., 1908
n ...
Mills, William Hobson, Widdows, Sibyl T.
openaire   +1 more source

The Biochemical Pathways of Nicotinamide-Derived Pyridones [PDF]

open access: yesInternational Journal of Molecular Sciences, 2021
As catabolites of nicotinamide possess physiological relevance, pyridones are often included in metabolomics measurements and associated with pathological outcomes in acute kidney injury (AKI). Pyridones are oxidation products of nicotinamide, its methylated form, and its ribosylated form.
Faisal Hayat   +6 more
openaire   +4 more sources

One-Pot Two-Step Catalytic Synthesis of Rationally Designed 6-amino-2-pyridone-3,5-dicarbonitriles Enabling Anti-Cancer Bioactivity

open access: yes, 2022
Herein we report a one-pot two-step synthesis of a bioactive 6-amino-2-pyridone-3,5-dicarbonitrile derivative using natural product catalysts betaine and guanidine carbonate.
Dipti B, Upadhyay   +6 more
core   +1 more source

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