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Ombuin 3-galactoside
Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveria chlorifolia''. Glycosides Ombuin-3-rutinoside can be isolated from ''Phytolacca dioica'', the ombu tree. Ombuin-3-O-rhamnosylglucoside can be found in ''Erythroxylum rufum ''Erythroxylum rufum'', the rufous false coca, is a flowering plant species in the genus ''Erythroxylum ''Erythroxylum'' (''Erythroxylon'') is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 s ...''.Flavonoids of Erythroxylum rufum and Erythroxylum ulei. Bruce A. Bohm, David W. Phillips and Fred R. Gander, J. Nat. Prod., 1981, volume 44, issue 6, pages 676–679, Other glycosides ( ombuosides) : * Ombuin 3-galactoside (C23H24O12, CAS number 69168-13-4) * Ombuin 3-glucoside (C23H24O12, CAS number 158642-42 ... [...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] |
Quercetin
Quercetin is a plant flavonol from the flavonoid group of polyphenols. It is found in many fruits, vegetables, leaves, seeds, and grains; capers, red onions, and kale are common foods containing appreciable amounts of it. It has a bitter flavor and is used as an ingredient in dietary supplements, beverages, and foods. Occurrence Quercetin is a flavonoid widely distributed in nature. The name has been used since 1857, and is derived from ''quercetum'' (oak forest), after the oak genus ''Quercus''. It is a naturally occurring polar auxin transport inhibitor. Quercetin is one of the most abundant dietary flavonoids, with an average daily consumption of 25–50 milligrams. In red onions, higher concentrations of quercetin occur in the outermost rings and in the part closest to the root, the latter being the part of the plant with the highest concentration. One study found that organically grown tomatoes had 79% more quercetin than non-organically grown fruit. Quercetin is presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erythroxylum
''Erythroxylum'' (''Erythroxylon'') is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 species contain the substance cocaine,Bieri S, Brachet A, Veuthey J, Christen P. Cocaine distribution in wild Erythroxylum species. ''Journal of ethnopharmacology''. 2006; 103: 439-447. and two of the species within this genus, ''Erythroxylum coca'' and ''Erythroxylum novogranatense'', both native to South America, are the main commercial source of cocaine and of the mild stimulant coca tea. Another species, '' Erythroxylum vaccinifolium'' (also known as catuaba) is used as an aphrodisiac in Brazilian drinks and herbal medicine. ''Erythroxylum'' species are food sources for the larvae of some butterflies and moths, including several ''Morpho'' species and ''Dalcera abrasa'', which has been recorded on ''E. deciduum'', and the species of ''Agrias''. Species , Kew's Plants of the World Online listed 259 species: {{Columns-list, colwidth=22e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ombuin 3-sulfate
Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveria chlorifolia''. Glycosides Ombuin-3-rutinoside can be isolated from ''Phytolacca dioica'', the ombu tree. Ombuin-3-O-rhamnosylglucoside can be found in ''Erythroxylum rufum''.Flavonoids of Erythroxylum rufum and Erythroxylum ulei. Bruce A. Bohm, David W. Phillips and Fred R. Gander, J. Nat. Prod., 1981, volume 44, issue 6, pages 676–679, Other glycosides ( ombuosides) : * Ombuin 3-galactoside Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveri ... (C23H24O12, CAS number 69168-13-4) * Ombuin 3-glucoside (C23H24O12, CAS number 158642-42- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flaveria Chlorifolia
''Flaveria chlorifolia'', the clasping yellowtops, is a North American plant species of ''Flaveria'' within the family Asteraceae. It is native to the southwestern United States (New Mexico, western Texas) and northern Mexico (Chihuahua, Coahuila, Nuevo León). ''Flaveria chlorifolia'' is a perennial herb up to 200 cm (80 inches or 6 2/3 feet) tall. One plant can sometimes produce 150 or more flower heads in a branching array, each head with 9-14 yellow disc flowers but no ray flowers. Chemical composition Quercetin-3-sulfate 3'-sulfotransferase is an enzyme that uses 3'-phosphoadenylyl sulfate and quercetin 3-sulfate to produce adenosine 3',5'-bisphosphate and quercetin 3,3'-bissulfate. The enzyme can be found in ''F. chlorifolia''. Ombuin 3-sulfate, the sulfate conjugate of ombuin Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be syn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytolacca Dioica
''Phytolacca dioica'', commonly known as ombú, is a massive evergreen tree native to the Pampa of Argentina. As its specific epithet suggests, it is dioecious, with male and female flowers on separate plants. It has an umbrella-like canopy that spreads to a diameter of 12 to 15 meters (40 to 50 feet) and can attain a height of 12 to 18 meters (40 to 60 feet). Because it is derived from herbaceous ancestors, its trunk consists of anomalous secondary thickening rather than true wood. As a result, the ombú grows fast but its wood is soft and spongy enough to be cut with a knife. These properties have led it to be used in the art of bonsai, as it is easily manipulated to create the desired effect. Since the sap is poisonous, the ombú is not grazed by cattle and is immune to locusts and other pests. For similar reasons, the leaves are sometimes used as a laxative or purgative. It is a symbol of Uruguay and Argentina, and of gaucho culture, as its canopy is quite distinguishab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erythroxylum Rufum
''Erythroxylum rufum'', the rufous false coca, is a flowering plant species in the genus ''Erythroxylum ''Erythroxylum'' (''Erythroxylon'') is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 species contain the substance cocaine,Bieri S, Brachet A, Veuthey J, Christen P. Cocaine distribution in wil ...''. Ombuin-3-O-rhamnosylglucoside, a glycoside of ombuin, can be found in ''E. rufum''.Flavonoids of Erythroxylum rufum and Erythroxylum ulei. Bruce A. Bohm, David W. Phillips and Fred R. Gander, J. Nat. Prod., 1981, volume 44, issue 6, pages 676–679, References External links rufum Plants described in 1789 Taxa named by Antonio José Cavanilles {{Malpighiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ombuin 3-galactoside
Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveria chlorifolia''. Glycosides Ombuin-3-rutinoside can be isolated from ''Phytolacca dioica'', the ombu tree. Ombuin-3-O-rhamnosylglucoside can be found in ''Erythroxylum rufum ''Erythroxylum rufum'', the rufous false coca, is a flowering plant species in the genus ''Erythroxylum ''Erythroxylum'' (''Erythroxylon'') is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 s ...''.Flavonoids of Erythroxylum rufum and Erythroxylum ulei. Bruce A. Bohm, David W. Phillips and Fred R. Gander, J. Nat. Prod., 1981, volume 44, issue 6, pages 676–679, Other glycosides ( ombuosides) : * Ombuin 3-galactoside (C23H24O12, CAS number 69168-13-4) * Ombuin 3-glucoside (C23H24O12, CAS number 158642-42 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ombuin 3-glucoside
Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveria chlorifolia''. Glycosides Ombuin-3-rutinoside can be isolated from ''Phytolacca dioica'', the ombu tree. Ombuin-3-O-rhamnosylglucoside can be found in ''Erythroxylum rufum''.Flavonoids of Erythroxylum rufum and Erythroxylum ulei. Bruce A. Bohm, David W. Phillips and Fred R. Gander, J. Nat. Prod., 1981, volume 44, issue 6, pages 676–679, Other glycosides ( ombuosides) : * Ombuin 3-galactoside Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin. Ombuin can be found in species of the genus ''Erythroxylum''. It can also be synthesized. Ombuin 3-sulfate can be isolated from '' Flaveri ... (C23H24O12, CAS number 69168-13-4) * Ombuin 3-glucoside (C23H24O12, CAS number 158642-42-3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
