Results 21 to 30 of about 15,982 (247)
Highly Sensitive Determination of Hesperidin Using Electrode Modified with Poly(Ferulic Acid)
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
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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
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Synthesis Chalones and Their Isomerization into Flavanones and Azaflavanones
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
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Photoreactions of Flavanones [PDF]
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
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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
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Photoreactions of Flavanones [PDF]
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
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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
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Copper chelating properties of flavanones [PDF]
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
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.
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Flavanones from Miconia prasina [PDF]
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
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