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2,3-Dihydroquercetin

Dihydrokaempferol and dihydroquercetin were subsequently reported from E. cordifolia (Tschesche et al., 1979). [Pg.201]

Iron-, copper-, and zinc complexes of rutin, dihydroquercetin, and green tea epicatechins were found to be much more efficient inhibitors than parent flavonoids of toxic effects of chrysotile asbestos fibers on peritoneal macrophages and erythrocytes [168], It was proposed that in this case the enhanced activity of metal-flavonoid complexes was increased by the absorption on chrysotile fibers. [Pg.868]

It is interesting that only dihydroquercetin has the redox potential much lower than that of ascorbate (282 mV) and kaempferol, luteolin, and fisetin have the values close to ascorbate. [Pg.869]

Other compounds tested cyanidin, apigenin, luteohn 4 -methoxyflavonol 3, 4 -dimethoxyflavonol 4 acetoxy-7-OH-6-methoxyisoflavone naringenin dihydroquercetin ... [Pg.85]

Stafford HA, Lester HH (1982) Enzymic and nonenzymic reduction of (+)-dihydroquercetin to its 3,4,-diol. Plant Physiol 70(3) 695-698... [Pg.92]

Dihydroflavonol 4-reductase (DFR) catalyzes the stereospecific conversion of 2R,3R)-trans-DHFs to the respective (2R,35, 45)-flavan-2,3-traKi-3,4-cA-diols (leucoanthocyanidins) through a NADPH-dependent reduction at the 4-carbonyl. DNA sequences for DFR were first identified from A. majus and Z. mays, and the identity of the Z. mays sequence confirmed by in vitro transcription and translation of the cDNA and assay of the resultant protein. DNA sequences have now been cloned from many species, with the size of the predicted protein averaging about 38kDa. Stereospecificity to (2R,3R)-dihydroquercetin (DHQ) has been shown for some recombinant DFR proteins. ... [Pg.156]

Reddy, A.R. et al.. The Al (anthocyanin-1) locus in Zea mays encodes dihydroquercetin reductase. [Pg.204]

Rhododendron mucronatum G. Don Bai Du Juan Hua (white azalea) (flower) Essential oil, germacrone, farreol, grayanotoxin, gossypetin, azaleatin, 5-methyl kaempferol, 5-methyl myricetin, syringic acid, dihydroquercetin, coumarins, phenolic acid, p-hydroxybenzoic acid, protocatechuic acid, vanillic acid.48 Treat cough, asthma, headache, respiratory infection. [Pg.140]

In plants accumulating anthocyanins, flavonols, and proanthocyanidins, naringenin is stereospecifically hydroxylated at position 3 of the C-ring (C3) by the 2-oxoglutarate-dependent dioxygenase flavanone 3-hydroxylase (F3H, EC 1.14.11.9) to yield the 3-hydroxy-trans-flavanone (syn. dihydroflavonol) dihy-drokaempferol [Springob et al., 2003] (Fig.21 2). Dihydroquercetin (3, 4, 5,5, 7-... [Pg.497]

See other pages where 2,3-Dihydroquercetin is mentioned: [Pg.316]    [Pg.201]    [Pg.201]    [Pg.244]    [Pg.859]    [Pg.860]    [Pg.866]    [Pg.869]    [Pg.132]    [Pg.78]    [Pg.79]    [Pg.80]    [Pg.141]    [Pg.275]    [Pg.118]    [Pg.367]    [Pg.417]    [Pg.860]    [Pg.861]    [Pg.867]    [Pg.870]    [Pg.38]    [Pg.201]    [Pg.204]    [Pg.471]    [Pg.541]    [Pg.92]    [Pg.259]    [Pg.30]    [Pg.498]    [Pg.524]    [Pg.150]   
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Dihydroquercetin 3-0-acetate 4’-methyl

Dihydroquercetin 3-0-acetate 4’-methyl ether

Dihydroquercetin 3-O-acetate 4’-methyl

Dihydroquercetin 3-O-acetate 4’-methyl structure

Dihydroquercetin 3-acetate

Dihydroquercetin reductase

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