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Veronicastroside
Veronicastroside (identical to Lonicerin) is a flavone, a type of flavonoid. It is the 7-''O''-neohesperidoside of luteolin. It can be found in ''Veronicastrum sibiricum'' var. ''japonicum'' and in ''Teucrium gnaphalodes ''Teucrium gnaphalodes'' is a plant species in the genus ''Teucrium''. It is endemic to the Iberian Peninsula and grows at altitudes between 200 and 1500 m. It flowers from March to July. The flavones diosmin, cirsimaritin, salvigenin, cirsili ...''. References Flavones Flavone glycosides {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veronicastrum Sibiricum
''Veronicastrum sibiricum'', the Sibirian veronicastrum, is a plant in the plantain family Plantaginaceae. Description ''Veronicastrum sibiricum'' is a herbaceous plant Herbaceous plants are vascular plants that have no persistent wood, woody stems above ground. This broad category of plants includes many perennial plant, perennials, and nearly all Annual plant, annuals and Biennial plant, biennials. Definition ... with whorled, simple leaves, on weakly upright stems. The flowers are pale purple, borne in summer. Veronicastroside, a flavone, can be found in ''Veronicastrum sibiricum var. japonicum''.Die Flavonglykoside von Veronicastrum sibiricum Pennell var. japonicum Hara und Synthese des Luteolin-7-neohesperidosids (Veronicastrosid). Hiroyuki Inouye, Yasuhiko Aoki, Hildebert Wagner, Ludwig Hörhammer, Gerold Aurnhammer and Wolfgang Budweg, Chemische Berichte, September 1969, Volume 102, Issue 9, pages 3009–3013, (article in German) References Plantaginaceae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavone
Flavone is an organic compound with the formula . A white solid, flavone is a derivative of chromone with a phenyl (Ph) substituent adjacent to the ether group. The compound is of little direct practical importance, but susbstituted derivatives, the flavones and flavonoids are a large class of nutritionally important natural products. Flavone can be prepared in the laboratory by cyclization of 2-hydroxacetophenone. Isomeric with flavone is isoflavone, where the phenyl group is adjacent to the ketone In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bon .... References {{Flavones ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavonoid
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 compound, 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-phenylchromone, chromen-4-one (3-phenyl-1,4-benzopyran, benzopyrone) structure *neoflavonoids, derived from 4-phenylcoumarine (4-phenyl-1,2-benzopyran, 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 bioflav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neohesperidoside
Neohesperidose is the disaccharide which is present in some flavonoids. It can be found in species of ''Typha.'' ''Delphinidin-3-neohesperidoside and cyanidin-3- neohesperidoside from receptacles of Podocarpus species, Oyvind M. Andersen, Phytochemistry, 1989, Volume 28, Issue 2, Pages 495–497, Neohesperidosides * Cyanidin-3-neohesperidoside * Delphinidin-3-neohesperidoside * Rhoifolin or apigenin 7-''O''-neohesperidoside * Myricetin-3-''O''-neohesperidoside found in '' Physalis angulata''A novel cytotoxic flavonoid glycoside from Physalis angulata. N. Ismail and M. Alam, Fitoterapia, Volume 72, Issue 6, August 2001, Pages 676-679, * Neohesperidin (hesperetin 7-''O''-neohesperidoside) * Neoeriocitrin (eriodictyol Eriodictyol is a bitter-masking flavanone, a flavonoid extracted from yerba santa ('' Eriodictyon californicum''), a plant native to North America. Eriodictyol is one of the four flavanones identified in this plant as having taste-modifying prop ... 7-''O''- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luteolin
Luteolin is a flavone, a type of flavonoid, with a yellow crystalline appearance. Luteolin is the principal yellow dye compound that is obtained from the plant ''Reseda luteola'', which has been used as a source of the dye since at least the first millennium B.C. Luteolin was first isolated in pure form, and named, in 1829 by the French chemist Michel Eugène Chevreul. The luteolin empirical formula was determined by the Austrian chemists Heinrich Hlasiwetz and Leopold Pfaundler in 1864. In 1896, the English chemist Arthur George Perkin proposed the correct structure for luteolin. Perkin's proposed structure for luteolin was confirmed in 1900 when the Polish-Swiss chemist Stanislaw Kostanecki (1860–1910) and his students A. Różycki and J. Tambor synthesized luteolin. Natural occurrences Luteolin is most often found in leaves, but it is also seen in rinds, barks, clover blossom, and ragweed pollen. It has also been isolated from the aromatic flowering plant, ''Salvia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teucrium Gnaphalodes
''Teucrium gnaphalodes'' is a plant species in the genus ''Teucrium''. It is endemic to the Iberian Peninsula and grows at altitudes between 200 and 1500 m. It flowers from March to July. The flavones diosmin, cirsimaritin, salvigenin, cirsilineol, cirsiliol, luteolin, apigenin and the flavanone naringenin Naringenin is a flavorless, colorless flavanone, a type of flavonoid. It is the predominant flavanone in grapefruit, and is found in a variety of fruits and herbs. Structure Naringenin has the skeleton structure of a flavanone with three hydro ..., as well as the flavone glycosides luteolin-7-O-β-D-glucoside and apigenin-7-O-β-D-glucoside, and the diglycosides luteolin-7-O-β-D-rutinoside, luteolin-7-O-β-D-neohesperidoside ( veronicastroside) and luteolin-7-O-β-D- sambubioside can be found in ''T. gnaphalodes''.Flavonoid Aglycones and Glycosides from Teucrium gnaphalodes. F. A. T. Barberán, M. I. Gil, F. Tomás, F. Ferreres and A. Arques, J. Nat. Prod., 1985, 48 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavones
Flavones (from Latin ''flavus'' "yellow") are a class of flavonoids based on the backbone of 2-phenylchromen-4-one (2-phenyl-1- benzopyran-4-one) (as shown in the first image of this article). Flavones are common in foods, mainly from spices, and some yellow or orange fruits and vegetables. Common flavones include apigenin (4',5,7-trihydroxyflavone), luteolin (3',4',5,7-tetrahydroxyflavone), tangeritin (4',5,6,7,8-pentamethoxyflavone), chrysin (5,7-dihydroxyflavone), and 6-hydroxyflavone. Intake and elimination The estimated daily intake of flavones is about 2 mg per day. Following ingestion and metabolism, flavones, other polyphenols, and their metabolites are absorbed poorly in body organs and are rapidly excreted in the urine, indicating mechanisms influencing their presumed absence of metabolic roles in the body. Drug interactions Flavones have effects on CYP ( P450) activity, which are enzymes that metabolize most drugs in the body. Biosynthesis The biosynthesis of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
