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Neoflavonoids
Neoflavonoids are a class of polyphenolic compounds. While flavonoids (in the narrow sense) have the 2-phenylchromen-4-one backbone, neoflavonoids have the 4-phenylchromen backbone with no hydroxyl group substitution at position 2. Types Neoflavonoids include 4-arylcoumarins (neoflavones), 4-arylchromanes, dalbergiones and dalbergiquinols. * Neoflavones are derived from the 4-phenylcoumarin (or 4-aryl-coumarin) backbone (C15H12O2). The first neoflavone isolated from natural sources was calophyllolide from ''Calophyllum inophyllum'' seeds (1951). It is also found in the bark and timber of the plant '' Mesua thwaitesii'', endemic to Sri Lanka. * Neoflavenes possess the 4-phenylchromen backbone (C15H10O2). Dalbergichromene, extracted from the stem-bark and heartwood of ''Dalbergia sissoo'', is an example of such compounds Other examples * Coutareagenin (5-hydroxy-7-methoxy-4-(3,4-dihydroxyphenyl)-2H-benzo-1-pyran-2-on) found in ''Hintonia latiflora ''Hintonia latiflora'' is a pl ... [...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-phenylcoumarin (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 bioflavo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalbergichromene
Dalbergichromene is a neoflavene, a type of neoflavonoid (a polyphenolic compound). Dalbergichromene can be extracted from the stem-bark and heartwood of '' Dalbergia sissoo''. It has also been synthesized from vanillin. References Neoflavonoids Resorcinol ethers {{Aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coumarin
Coumarin () or 2''H''-chromen-2-one is an aromatic organic chemical compound with formula . Its molecule can be described as a benzene molecule with two adjacent hydrogen atoms replaced by an unsaturated lactone ring , forming a second six-membered heterocycle that shares two carbons with the benzene ring. It belongs to the benzopyrone chemical class and is considered a lactone. Coumarin is a colorless crystalline solid with a sweet odor resembling the scent of vanilla and a bitter taste. It is found in many plants, where it may serve as a chemical defense against predators. While coumarin is not an anticoagulant, its 3-alkyl-4-hydroxy derivatives, such as the fungal metabolite dicoumarol, inhibit synthesis of vitamin K, a key component in blood clotting. A related compound, the prescription drug anticoagulant warfarin, is used to inhibit formation of blood clots, deep vein thrombosis, and pulmonary embolism. Etymology Coumarin is derived from , the French word for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calophyllum Inophyllum
''Calophyllum inophyllum'' is a large evergreen plant, commonly called tamanu, oil-nut, mastwood, beach calophyllum or beautyleaf. It is native to the Old World Tropics, from Africa through Asia to Australia and Polynesia. Due to its importance as a source of timber for the traditional shipbuilding of large outrigger ships, it has been spread in prehistoric times by the migrations of the Austronesian peoples to the islands of Oceania and Madagascar, along with other members of the genus ''Calophyllum''. It has since been naturalized in regions of the East African coast. It is also a source of the culturally important tamanu oil. Names ''Calophyllum inophyllum'' is also known as Alexandrian laurel balltree, beach touriga, Borneo-mahogany, Indian doomba oiltree, Indian-laurel, laurelwood, red poon, satin touriga, and tacamahac-tree. In Island Southeast Asia and Oceania, it is also commonly known as bintangur, bitaog, tamanu, or kamani. In Kiswahili it is known as Mtondoo. Descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesua Thwaitesii
''Mesua thwaitesii'', is a plant species in the family Calophyllaceae. It is native to Sri Lanka and southwestern India.''Mesua thwaitesii'' Planch. & Triana '''', Retrieved 26 May 2023. The Sinhalese people of Sri Lanka call it "Diya Nā - දිය නා". The plant is highly valuable as a medicinal plant within the country. Chemistry Timber, seeds and bark of ''Mesua thwaitesii'' is known to have |
Dalbergia Sissoo
''Dalbergia sissoo'', known commonly as North Indian rosewood or shisham, is a fast-growing, hardy, deciduous rosewood tree native to the Indian subcontinent and southern Iran. ''D. sissoo'' is a large, crooked tree with long, leathery leaves and whitish or pink flowers. Description ''Dalbergia sissoo'' is a medium to large deciduous tree with a light crown, which reproduces by seeds and basal shoot, suckers. It can grow up to in height and in diameter, but is usually smaller. Trunks are often crooked when grown in the open. Leaves are leathery, alternate, pinnately compound, and about long. Flowers are whitish to pink, fragrant, nearly sessile, up to long, and in dense clusters in length. Pods are oblong, flat, thin, strap-like, long, wide, and light brown. They contain one to five flat, bean-shaped seeds, long. They have a long taproot and numerous surface roots that produce suckers. Young shoots are downy and drooping; established stems have light brown to dark gray b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hintonia Latiflora
''Hintonia latiflora'' is a plant species in the genus ''Hintonia (plant), Hintonia''. ''Hintonia latiflora'' contains the neoflavonoid coutareagenin (5-hydroxy-7-methoxy-4-(3,4-dihydroxyphenyl)-2H-benzo-1-pyran-2-ol), an antidiabetic active substance. References Chiococceae Taxa named by Martín Sessé y Lacasta Taxa named by José Mariano Mociño Taxa named by Alphonse Pyramus de Candolle {{Cinchonoideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
