Results 1 to 10 of about 9,191 (227)

A facile synthesis in aqueous medium of 3-hydroxy-2-pyrone from aldaric acids or their derivatives

open access: yesResults in Chemistry, 2022
3-Hydroxy-2-pyrone is a valuable building block of many molecules. The syntheses until now proposed to prepare this compound are not ecofriendly and are unsuitable for large scale productions.
Gabriella Leonardi   +3 more
doaj   +2 more sources

Synthesis of dialkylaminocarbonyl N-chloro- carbonyl-N-phenyl-4-aminobenzo-(-pyrone derivatives [PDF]

open access: yesActa Periodica Technologica, 2004
The title compounds were prepared by condensation of N-chlorocarbonyl-N-phenyl-4-aminobenzo-(-pyrone with diethylamine dibutylamine and isopropylamine.
Đuđić Radana M.   +1 more
doaj   +2 more sources

Production of triacetic acid lactone from oleic acid by engineering the yeast Candida viswanathii [PDF]

open access: yesMicrobial Cell Factories
Triacetic acid lactone (TAL) is a promising platform chemical to produce valuable compounds. The development of engineered microbial hosts to efficiently produce TAL from lipid-containing waste streams could be a cost-effective, sustainable and ...
Saptarshi Ghosh   +8 more
doaj   +2 more sources

Phloroglucinol α-Pyrones from Helichrysum: A Review on Structural Diversity, Plant Distribution and Isolation [PDF]

open access: yesPlants
Helichrysum species (Asteraceae) are renowned for their diverse phytochemical profiles and traditional medicinal applications. Among their specialized metabolites, phloroglucinol-α-pyrone derivatives represent a structurally unique and pharmacologically ...
Yulian Voynikov
doaj   +2 more sources

Pyrones to Pyrans: Enantioselective Radical Additions to Acyloxy Pyrones. [PDF]

open access: yesChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mukund P, Sibi, Jake, Zimmerman
openaire   +3 more sources

Two new -Methoxy--Pyrones From the Mangrove Sediment-Derived SCSIO NS126

open access: yesNatural Product Communications, 2021
Two new α -methoxy- γ -pyrone analogs, 2-methoxy-3-methyl-5,6-diethyl- γ -pyrone ( 2 ) and 2-methoxy-3,5-dimethyl-6-propyl- γ -pyrone ( 3 ), together with 2-methoxy-3,5-dimethyl-6-ethyl- γ -pyrone ( 1 ), firstly isolated from natural sources, were ...
Kunlong Li   +6 more
doaj   +1 more source

4-Hydroxy-2-pyrones: Synthesis, Natural Products, and Application

open access: yesOrganics, 2023
4-Hydroxy-2-pyrones are of interest as potential biorenewable molecules for a sustainable transition from biomass feedstock to valuable chemical products.
Vladislav V. Fedin   +3 more
doaj   +1 more source

Synergistic Antibacterial Potential of 6-Pentyl-α-pyrone Lactone and Zinc Oxide Nanoparticles against Multidrug-Resistant Enterobacterales Isolated from Urinary Tract Infections in Humans

open access: yesAntibiotics, 2022
Urinary tract infection (UTI) is one of the most common bacterial infections in the world, which is associated with high morbidity and mortality rates.
Ahmed M. E. Kotb   +5 more
doaj   +1 more source

ANTIMICROBIAL ACTIVITY OF POLYKETIDE-DERIVED SECONDARY METABOLITES FROM DOTHIDEOMYCETES SP. [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University
Discovering alternative compounds for treating antibiotic-resistant infections is critical to alleviate the current antibiotic resistance crisis. Endophytic fungi are a source of numerous recently approved antibiotics particularly polyketide-derived ...
lourin Malak   +6 more
doaj   +1 more source

Production of New Antibacterial 4-Hydroxy-α-Pyrones by a Marine Fungus Aspergillus niger Cultivated in Solid Medium

open access: yesMarine Drugs, 2019
Four 4-hydroxy-α-pyrones including three new ones named nipyrones A−C (1−3) together with one known analogue germicidin C (4) were discovered from a marine sponge-derived fungus Aspergillus niger cultivated in a solid rice culture. Their
Lijian Ding   +6 more
doaj   +1 more source

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