Results 11 to 20 of about 763 (162)
Pharmaceutics, 2022 While flavanones exist in a variety of chemical forms, their favorable health effects are most prominent in their free form—aglycones. Their concentrations in grapefruit (Citrus × paradisi L.) extracts vary according to the extraction and hydrolysis ...
Jolita Stabrauskiene +3 more
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Highly Sensitive Determination of Hesperidin Using Electrode Modified with Poly(Ferulic Acid)
Engineering 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
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Molecules, 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
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Synthesis Chalones and Their Isomerization into Flavanones and Azaflavanones
Methods 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
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Antioxidants, 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
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Photoreactions of Flavanones [PDF]
Bulletin 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
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Biosensors, 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
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Photoreactions of Flavanones [PDF]
Bulletin 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
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Biomolecules, 2022 Flavonoids are natural phytochemicals that have therapeutic effects and act in the prevention of several pathologies. These phytochemicals can be found in seeds, grains, tea, coffee, wine, chocolate, cocoa, vegetables and, mainly, in citrus fruits ...
Adriana de Cássia Ortiz +15 more
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Flavanones from Miconia prasina [PDF]
Phytochemistry 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
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