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Xanthonoids
A xanthonoid is a chemical natural phenolic compound formed from the xanthone backbone. Many members of the Clusiaceae contain xanthonoids. Xanthonoid biosynthesis in cell cultures of ''Hypericum androsaemum'' involves the presence of a benzophenone synthase condensing a molecule of benzoyl-CoA with three malonyl-CoA yielding to 2,4,6-trihydroxybenzophenone. This intermediate is subsequently converted by a benzophenone 3′-hydroxylase, a cytochrome P450 monooxygenase, leading to the formation of 2,3′,4,6-tetrahydroxybenzophenone. Some examples are tomentonone, zeyloxanthonone and calozeyloxanthone isolated from the bark of ''Calophyllum tomentosum'', apetalinone A, apetalinone B, B, apetalinone C, C and apetalinone D, D from ''Calophyllum apetalum'', gaudichaudione A, gaudichaudione B, B, gaudichaudione C, C, gaudichaudione D, D, gaudichaudione E, E, gaudichaudione F, F, gaudichaudione G, G, gaudichaudione H, H, gaudichaudiic acid A, gaudichaudiic acid B, B, gaudichaudiic acid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangiferin
Mangiferin is a glucosylxanthone (xanthonoid). This molecule is a glucoside of norathyriol. Natural occurrences Mangiferin was first isolated from the leaves and bark of ''Mangifera indica'' (the mango tree). It can also be extracted from mango peels and kernels, ''Iris unguicularis'', ''Anemarrhena asphodeloides'' rhizomes and ''Bombax ceiba'' leaves. It is also found in the genera ''Salacia (plant), Salacia'' and ''Cyclopia (plant), Cyclopia'', as well as in coffee leaves and some species of ''Crocus''. Among the group of ''Asplenium hybrids'' known as the "Appalachian ''Asplenium'' complex", mangiferin and isomangiferin are produced only by ''Asplenium montanum'' and its hybrid descendants. The distinctive gold-orange fluorescence of these compounds under ultraviolet light has been used to aid in the chromatographic identification of hybrid ''Asplenium''s. Research Preliminary research is conducted on the potential biological properties of mangiferin, although there were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
