Quercetin rutin isoquercetin and icariin own same core structure from
flavone the numbers of free phenolic hydroxyl groups for them are 5 4 4 and 1.
This indicated that the cyclization of the oxygen atom at C-7 to form the pyran ring increases the cytotoxic activity of the
flavone. Compound 2 was the most potent cytotoxic agent against HeLa cells with an [IC.sub.50] 0.079 [micro]M.
As to bioactive ingredients, the both of yellow ginger and hoantchy root comprised
flavones, the property of which can increase the concentration of HDL (high-density lipoprotein) (Wei et al., 2008).
The two new prenylated
flavones, together with the four known flavonoids displayed a promising cytotoxic effect on liver metasttatic murine colon 26-L5 carcinoma cells with an ED50 value between 10-90 mg/mL [22].
Equimolar mixture of 3-([omega]-bromoalkoxy)-substituted
flavone and substituted aniline/2-aminopyridine were refluxed in ethanol (100 mL) for 10-12 h.
"
Flavones and flavonols at dietary levels inhibit a transformation of aryl hydrocarbon receptor induced by dioxin," Febs Lett.
One of the 6 major subgroups of flavenoids is the subgroup of
Flavone including Flavon, Apigenin and Luteolin, which all three exist in chamomile.
6 TANGERINE PEEL Compounds found in citrus fruit peels - called polymethoxylated
flavones (PMFs) - can lower cholesterol.
His work has mainly focused on polymethoxylated
flavones, or PMFs, which typically occur at very high concentrations in orange oil, especially in residues left behind after orange-oil processing.
In Phytochemicals, it was good to find more chemical structures than most texts provide, to help us steer though the flavonols, flavanols,
flavones, flavonones, isoflavones, etc.
Analysis of structural requirements for Ah receptor antagonist activity: ellipticines,
flavones, and related compounds.
