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Ermanin
Ermanin is an ''O''-methylated flavonol. It was isolated from ''Tanacetum microphyllum ''Tanacetum microphyllum'' is a species of flowering plant in the aster family, Asteraceae. It is endemic to the Iberian Peninsula.Abad, M. J., et al. (2003)The phytochemical and pharmacological investigations on ''Tanacetum microphyllum''.''Rec ...''. References O-methylated flavonols Flavonoids found in Asteraceae Resorcinols {{phenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O-methylated Flavonol
The O-methylated flavonoids or methoxyflavonoids are flavonoids with methylations on hydroxyl groups (methoxy bonds). O-methylation has an effect on the solubility of flavonoids. Enzymes O-methylated flavonoids formation implies the presence of specific O-methyltransferase (OMT) enzymes which accept a variety of substrates. Those enzymes mediate the O-methylation on a specific hydroxyl group, like on 4' (example in ''Catharanthus roseus'') or 3' (example in rice) positions. Those positions can be ortho, meta, para and there can be a special 3-O-methyltransferase for the 3-OH position. Calamondin orange ('' Citrus mitis'') exhibits all of those activities. Plant enzymes * Apigenin 4'-O-methyltransferase * 8-hydroxyquercetin 8-O-methyltransferase * Isoflavone 4'-O-methyltransferase * Isoflavone 7-O-methyltransferase * Isoliquiritigenin 2'-O-methyltransferase * Isoorientin 3'-O-methyltransferase * Kaempferol 4'-O-methyltransferase * Luteolin O-methyltransferase * Methylquercet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanacetum Microphyllum
''Tanacetum microphyllum'' is a species of flowering plant in the aster family, Asteraceae. It is endemic to the Iberian Peninsula.Abad, M. J., et al. (2003)The phytochemical and pharmacological investigations on ''Tanacetum microphyllum''.''Recent Research Developments in Life Sciences'' 1, II. 371-95. The plant has been used for centuries in Spanish traditional medicine as an anti-inflammatory and antirheumatic. Compounds isolated from extracts of the plant include santin, ermanin, centaureidin Centaureidin is an O-methylated flavonol. It can be isolated from '' Tanacetum microphyllum'', ''Achillea millefolium'', ''Brickellia veronicaefolia'', ''Bidens pilosa ''Bidens pilosa'' is an annual species of herbaceous flowering plant in t ..., and hydroxyachillin. References microphyllum Flora of Portugal Flora of Spain Plants described in 1838 Medicinal plants of Europe Endemic flora of the Iberian Peninsula {{Anthemideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavonoids Found In Asteraceae
Flavonoids (or bioflavonoids; from the Latin word ''flavus'', meaning yellow, their color in nature) are a class of polyphenolic secondary metabolites found in plants, and thus commonly consumed in the diets of humans. Chemically, flavonoids have the general structure of a 15-carbon skeleton, which consists of two phenyl rings (A and B) and a heterocyclic ring (C, the ring containing the embedded oxygen). This carbon structure can be abbreviated C6-C3-C6. According to the IUPAC nomenclature, they can be classified into: *flavonoids or bioflavonoids *isoflavonoids, derived from 3-phenyl chromen-4-one (3-phenyl-1,4-benzopyrone) structure *neoflavonoids, derived from 4-phenylcoumarine (4-phenyl-1,2-benzopyrone) structure The three flavonoid classes above are all ketone-containing compounds and as such, anthoxanthins (flavones and flavonols). This class was the first to be termed bioflavonoids. The terms flavonoid and bioflavonoid have also been more loosely used to describe non-k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
