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Rhynchosia Volubilis
''Rhynchosia volubilis'' is a plant species in the genus '' Rhynchosia''. Tergallic acid dilactone can be found in ''R. volubilis'' seeds. References External links volubilis Volubilis (; ar, وليلي, walīlī; ber, ⵡⵍⵉⵍⵉ, wlili) is a partly excavated Berber-Roman city in Morocco situated near the city of Meknes, and may have been the capital of the kingdom of Mauretania, at least from the time of Kin ... Plants described in 1790 {{Phaseoleae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchosia
''Rhynchosia'', also known as snoutbean, is a genus of plants in the family Fabaceae. There are several different complexes within the genus, including the ''Senna'' complex.Turner,B.L., http://www.biosci.utexas.edu/prc/pdfs/Turner-Lundellia14.pdf Species Species include: * '' Rhynchosia americana'' * '' Rhynchosia calosperma'' * '' Rhynchosia caribaea'' * '' Rhynchosia chapmanii''Verdcourt, B. (2000). New species of ''Rhynchosia'' Lour. (Leguminosae-Phaseoleae-Cajaninae) from the ''Flora Zambesiaca'' area. ''Kew Bulletin'' 55:1 137-46. * '' Rhynchosia chimanimaniensis'' * '' Rhynchosia cinerea'' * '' Rhynchosia cytisoides'' * '' Rhynchosia densiflora'' * '' Rhynchosia difformis'' * '' Rhynchosia edulis'' * '' Rhynchosia latifolia'' * '' Rhynchosia lewtonii'' * '' Rhynchosia malacophylla'' * '' Rhynchosia michauxii'' * '' Rhynchosia minima'' * '' Rhynchosia parvifolia'' * '' Rhynchosia phaseoloides'' * '' Rhynchosia precatoria'' * '' Rhynchosia reniformis'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tergallic Acid
Tergallic acids are trimers of gallic acid, often found naturally in the form of glycosides. Tergallic acid O- or C-glucosides that can be found in acorns of several ''Quercus'' (oak) species. The dehydrated tergallic acid C-glucoside and tergallic acid O-glucoside can be characterised in the acorns of ''Quercus macrocarpa''. Dehydrated tergallic-C-glucoside (m/z 613) can be found in the cork from '' Quercus suber''. Tergallic acid glucosides can also be found in ''Terminalia chebula''. Tergallic acid dilactone can be found in ''Rhynchosia volubilis'' seeds. The chemical formula is not the same as given by Kinjo ''et al.'' (molecule with an ether link between the ellagic and gallic acid residues) or by Cantos, Chapman and Fernandes ''et al.'' (molecule with a carbon-carbon link). Cantos, Fernandes and Chapman called the molecule with an ether link valoneic acid dilactone while Kinjo and Shuaibu ''et al.'' called the molecule with a carbon-carbon link flavogallonic acid dila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dilactone
Lactones are cyclic carboxylic esters, containing a 1-oxacycloalkan-2-one structure (), or analogues having unsaturation or heteroatoms replacing one or more carbon atoms of the ring. Lactones are formed by intramolecular esterification of the corresponding hydroxycarboxylic acids, which takes place spontaneously when the ring that is formed is five- or six-membered. Lactones with three- or four-membered rings (α-lactones and β-lactones) are very reactive, making their isolation difficult. Special methods are normally required for the laboratory synthesis of small-ring lactones as well as those that contain rings larger than six-membered. Nomenclature Lactones are usually named according to the precursor acid molecule (''aceto'' = 2 carbon atoms, ''propio'' = 3, ''butyro'' = 4, ''valero'' = 5, ''capro'' = 6, etc.), with a ''-lactone'' suffix and a Greek letter prefix that specifies the number of carbon atoms in the heterocycle — that is, the distance between the relevant -OH ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
