|
Brickellin
Brickellin is an O-methylated flavonol. It can be found in ''Brickellia veronicifolia ''Brickellia veronicifolia'' is a North American species of plants in the family Asteraceae. It is widespread across much of Mexico, from Chihuahua to Oaxaca. In the United States, it very rare, found only in the Chisos Mountains inside Big Bend ...''.Brickellin, a novel flavone from Brickellia veronicaefolia and B. chlorolepis. Roberts M. F., Timmermann B. N., Mabry T. J., Brown R. and Matlin S. A., Phytochemistry, 1984, volume 23, no 1, pages 163-165, References O-methylated flavonols Flavonoids found in Asteraceae {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brickellia Veronicifolia
''Brickellia veronicifolia'' is a North American species of plants in the family Asteraceae. It is widespread across much of Mexico, from Chihuahua to Oaxaca. In the United States, it very rare, found only in the Chisos Mountains inside Big Bend National Park in Texas, and also in Otero County in New Mexico. ''Brickellia veronicifolia'' is a shrub up to 90 cm (3 feet) tall. It produces large numbers of small, pale yellow or cream-colored flower heads. ''Brickellia veronicifolia'' contains high amounts of essential oils, Germacrene D, a natural insecticide Insecticides are substances used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed to b ... and the two flavonoids brickellin and eupatolitin. References External links veronicifolia Flora of Mexico Plant toxin insecticides Plants described in 1818 ... [...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] |