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Neoflavonoids are a class of polyphenolic compounds. While
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 known to found in bark and timber of Sri Lankan endemic plant ''
Neoflavonoids are a class of polyphenolic compounds. While 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 ...
s (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 known to found in bark and timber of Sri Lankan endemic plant ''Mesua thwaitesii
''Mesua thwaitesii'', is a plant species in the family Calophyllaceae. It is endemic to Sri Lanka, where Sinhalese people called "Diya Nā - දිය නා". The plant is highly valuable as a medicinal plant within the country.
Chemistry
Ti ...
''.
* 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'' * Dalbergin * Nivetin isolated from '' Echinops niveus''References
External links
{{Flavonoids