Results 51 to 60 of about 4,197 (216)

The arylation of 2-pyrones and related heterocycles [PDF]

open access: yes, 2018
2-Pyrones, and related heterocycles such as 2-pyridones, 2-coumarins and 2- quinolones, are useful model substrates to test a novel methodology due to their varied chemical properties.
Prendergast, Aisling M.
core  

Consecutive Alkynylation–Michael Addition–Cyclocondensation (AMAC) Multicomponent Syntheses of α-Pyrones and α-Pyridones [PDF]

open access: yes, 2018
A novel consecutive three-component synthesis of α-pyrones is based upon an alkynylation–Michael addition–cyclocondensation (AMAC) sequence, starting from (hetero)aroyl chloride and terminal alkyne to furnish the alkynone which reacts with malonates to ...
Thomas Müller, Natascha Breuer
core   +1 more source

Dietary Polyphenols as Natural Modulators of NF‐κB Signaling in Inflammation‐Driven Non‐Communicable Diseases: Focus on Cancer

open access: yesFood Science &Nutrition, Volume 14, Issue 7, July 2026.
Dietary polyphenols and phytochemicals suppress NF‐κB signaling. Mechanistically, by inhibiting IκBα degradation and preventing nuclear translocation of p65/p50 complexes, the polyphenols reduce the expression of pro‐inflammatory and pro‐survival genes, thereby decreasing overall cancer cell survival.
Khuzin Dinislam   +3 more
wiley   +1 more source

Facile synthesis, fluorescence, and photochromism of novel helical pyrones and chromenes [PDF]

open access: yes, 2006
Aryl coumaryl ethylenes undergo oxidative photocyclization readily to yield helical pyrone-annulated condensed aromatics. The pyrones are conveniently converted to the corresponding photochromic diphenylpyrans/chromenes.
Baidya, Mahiuddin   +3 more
core   +1 more source

Flavonoids in Nasal Therapeutics: Biological Activities, Delivery Challenges, and Formulation Strategies–A Systematic Review

open access: yesPhytotherapy Research, Volume 40, Issue 7, Page 4676-4709, July 2026.
Overview of the therapeutic potential of flavonoids in nasal delivery systems, highlighting their benefits to the human nasal cavity, and applications in the treatment of respiratory and brain‐related diseases. ABSTRACT Flavonoids represent a significant group of secondary metabolites.
Jeniffer Viviana Ramirez Hernández   +5 more
wiley   +1 more source

Iron Complexes With Proteins, Carbohydrates, and Maillard Products in Dairy Systems: Implication for Fortification, Bioavailability, and Product Functionality

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 4, July 2026.
ABSTRACT The global prevalence of iron (Fe) deficiency anemia (IDA) continues to pose major public health challenges, necessitating the development of effective fortification strategies. Dairy‐based systems are promising vehicles for Fe fortification and delivery due to their widespread consumption and nutritional value, although their complex matrix ...
Ishara De Silva   +5 more
wiley   +1 more source

Coumarins Disrupt Cell–Cell Communication and Virulence in Priority Pathogens: Targeting the PQS Signalling System in Pseudomonas aeruginosa

open access: yesMicrobial Biotechnology, Volume 19, Issue 7, July 2026.
The selective nature through which coumarin compounds produced by different species of plants target PQS signalling in Pseudomonas aeruginosa and select for distinct phenotypic responses in key pathogenic organisms adds to the growing evidence of their utility as natural virulence suppressors. ABSTRACT Cell‐to‐cell communication in microbial systems is
Dylan Boon   +8 more
wiley   +1 more source

A UHPLC-UV Method Development and Validation for Determining Kavalactones and Flavokavains in Piper methysticum (Kava)

open access: yesMolecules, 2019
An ultra-high-performance liquid chromatographic (UHPLC) separation was developed for six kava pyrones (methysticin, dihydromethysticin (DHM), kavain, dihydrokavain (DHK), desmethoxyyangonin (DMY), and yangonin), two unidentified components, and three ...
Yijin Tang, Christine Fields
doaj   +1 more source

Alkyl Arylacetates in Cascade Reactions with 2‐Cyanobenzaldehydes for the Synthesis of 3‐Substituted Isoindolinones

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 24, 23 June 2026.
Effective synthesis of 3‐substituted isoindolinones is possible through novel cascade reactions of alkyl arylacetates with 2‐cyanobenzaldehydes under mild, basic conditions. Herein we report the use of alkyl arylacetates as pro‐nucleophiles in cascade reactions with 2‐cyanobenzaldehydes leading to the formation of novel 3‐substituted isoindolinones, a ...
Antonia Di Mola   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy