Results 21 to 30 of about 15,982 (247)

Highly Sensitive Determination of Hesperidin Using Electrode Modified with Poly(Ferulic Acid)

open access: yesEngineering Proceedings, 2022
Hesperidin is a major phenolic antioxidant in orange fruits and is responsible for their positive health effect. It is used as part of the therapy for blood vessel conditions. Methods for hesperidin quantification are of practical interest.
Elvira Yakupova, Guzel Ziyatdinova
doaj   +1 more source

Synthesis and Antimicrobial Activity of Methoxy- Substituted γ-Oxa-ε-lactones Derived from Flavanones

open access: yesMolecules, 2019
Six γ-oxa-ε-lactones, 4-phenyl-3,4-dihydro-2H-1,5-benzodioxepin-2-one (5a) and its five derivatives with methoxy groups in different positions of A and B rings (5b−f), were synthesized from corresponding flavanones.
Witold Gładkowski   +9 more
doaj   +1 more source

Synthesis Chalones and Their Isomerization into Flavanones and Azaflavanones

open access: yesMethods and Protocols, 2019
Flavanones [2-aryl-2,3-dihydrochromen-4(1H)ones] and 2-aryl-2,3-dihydroquinolin-4(1H)-ones are valuable precursors in the synthesis of important pharmacological scaffolds, so efficient methodologies towards their synthesis are important in the medicinal ...
Djenisa H. A. Rocha   +3 more
doaj   +1 more source

Photoreactions of Flavanones [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1976
Abstract On irradiation in benzene, 5,7-dimethyl-4′-methoxyflavanone gave a bis-flavanone V, while in 2-propanol it was largely recovered. Irradiation of 4′-methoxyflavanone in benzene and 2-propanol yielded the corresponding chalcone and pinacols, respectively.
Ruka Nakashima   +2 more
openaire   +1 more source

Structure–Antioxidant–Antiproliferative Activity Relationships of Natural C7 and C7–C8 Hydroxylated Flavones and Flavanones

open access: yesAntioxidants, 2019
Common food flavonoids: chrysin, apigenin, luteolin, diosmetin, pinocembrin, naringenin, eriodictyol, hesperetin, and their analogues with an additional hydroxyl group at the C-8 position obtained via biotransformation were tested for antioxidant ...
Sandra Sordon   +7 more
doaj   +1 more source

Photoreactions of Flavanones [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1980
Abstract Parent and substituted flavanones undergo photochemical opening of the pyrone ring to give corresponding 2′-hydroxychalcones in benzene, pyridine, acetonitrile etc., the yields varying from 0 to 70% with substituents. The reaction is depressed by the addition of 1,3-pentadiene, nitrosobenzene, or acrylonitrile. On the other hand,
Ryoka Matsushima   +4 more
openaire   +1 more source

Layer-by-Layer Combination of MWCNTs and Poly(ferulic acid) as Electrochemical Platform for Hesperidin Quantification

open access: yesBiosensors, 2023
The electrochemical polymerization of suitable monomers is a powerful way to create voltammetric sensors with improved responses to a target analyte. Nonconductive polymers based on phenolic acids were successfully combined with carbon nanomaterials to ...
Elvira Yakupova   +3 more
doaj   +1 more source

Copper chelating properties of flavanones [PDF]

open access: yes, 2021
Charles University in Prague Faculty of Pharmacy in Hradec Králové Departmet of Pharmacology and Toxicology Candidate: Tereza Kantorová, MSc. Consultant: Assoc. Prof. Přemysl Mladěnka, Pharm.D.,PhD.
Kantorová, Tereza
core  

Application and properties of selected flavanones

open access: yes, 2018
Flavanones, secondary plant metabolites, are one of the main group of flavanoids. They are widely spread in nature in many plants. The large diversity of structural structure of flavanones and controlled methods of modifying their molecules have a huge ...
Sykuła, A., Błazińska, P.
core   +2 more sources

Flavanones from Miconia prasina [PDF]

open access: yesPhytochemistry Letters, 2014
A glycosidic flavanone miconioside C (1) has been isolated from the methanolic extract of the stems of Miconia prasina, together with 7-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranosylmatteucinol (2), miconioside B (3), matteucinol (4), farrerol (5) and desmethoxymatteucinol (6).
Amer H, Tarawneh   +5 more
openaire   +2 more sources

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