Results 11 to 20 of about 37,339 (280)
Methods of Protection/Deprotection of Hydroxy Groups in the Synthesis of Polyhydroxy Flavonols [PDF]
Вісник Харківського національного університету: Серія xіміяThe article represents a review of methods for obtaining polyhydroxy flavonols without protection of hydroxy groups, as well as syntheses using methylation, alkylation and benzylation of the initial reagents and, accordingly, demethylation, dealkylation ...
Oleksii Demidov, Alexander Roshal
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Antioxidant flavonols from fruits, vegetables and beverages: measurements and bioavailability
Biological Research, 2000 Flavonols are polyphenolic secondary plant metabolites that are present in varying levels in commonly consumed fruits, vegetables and beverages. Flavonols have long held an interest for nutritionists, which has increased following a Dutch study in the ...
ALAN CROZIER +7 more
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Dietary flavonols contribute to false-positive elevation of homovanillic acid, a marker of catecholamine-secreting tumours [PDF]
, 2011 Background: Urinary homovanillic acid (HVA) measurement is used routinely as a marker of the first test for the screening of catecholamine-secreting tumors and dopamine metabolism, but generates a large number of false-positive results.
Crozier, A. +9 more
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Myricetin: a Multifunctional Flavonol in Biomedicine [PDF]
Current Pharmacology Reports, 2022 The root cause of many diseases like CVD, cancer, and aging is free radicals which exert their effect by interfering with different metabolic pathways. The sources of free radicals can be exogenous, like UV rays from sunlight, and endogenous due to different metabolic by-products.In our body, there are defense mechanisms present, such as antioxidant ...
Gopikrishna Agraharam +2 more
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Natural Product Communications, 2010 Two geranylated and methylated flavonol derivatives, macarhizinoidins A ( 1 ) and B ( 2 ), along with a known phenolic compound methyl 4-isoprenyloxycinnamate ( 3 ), have been isolated from the methanol extract of the leaves M. rhizinoides.
Mulyadi Tanjung +4 more
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Plants, 2020 The flavonoid biosynthesis is a well-characterised model system for specialised metabolism and transcriptional regulation in plants. Flavonoids have numerous biological functions such as UV protection and pollinator attraction, but also biotechnological ...
Boas Pucker +2 more
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Flavonols are not essential for fertilization in Arabidopsis thaliana
, 1996 Flavonols are plant metabolites suggested to serve a vital role in fertilization of higher plants. Petunia and maize plants mutated in their flavonol biosynthesis are not able to set seed after self-pollination.
Ylstra, O. +2 more
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Acylated flavonol glycosides from Tagetes minuta with antibacterial activity
Frontiers in Pharmacology, 2015 Wild marigold (Tagetes minuta), a flowering plant of the family Asteraceae contains compounds of pharmaceutical and nutritional importance especially essential oils and flavonols.
Irum eShahzadi, Mohammad Maroof Shah
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Molecules, 2023 Plant species show large variation in the composition and content of their tannins and other polyphenols. These large metabolites are not easy to measure accurately, but they are important factors for species bioactivity and chemotaxonomy.
Suvi Vanhakylä, Juha-Pekka Salminen
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Antioxidants, 2023 The objective of this study is the characterization of the phenolic profile and antioxidant activity of elderberries (Sambucus nigra L.) from a collection of 79 wild specimens in northern Spain to assess variations in the species at the local level and ...
Roberto Rodríguez Madrera +1 more
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