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Flavogallonic Acid Dilactone
Flavogallonic acid dilactone is a hydrolysable tannin that can be found in '' Rhynchosia volubilis'' seeds, in '' Shorea laevifolia'', in ''Anogeissus leiocarpus'' and ''Terminalia avicennoides ''Terminalia avicennioides'' ( bm, Wolobugun) is a tree species in the genus '' Terminalia'' found in West Africa. Castalagin and flavogallonic acid dilactoneThe use of microfluorometric method for activity-guided isolation of antiplasmodial co ...''.The use of microfluorometric method for activity-guided isolation of antiplasmodial compound from plant extracts. M. N. Shuaibu, P. A. Wuyep, T. Yanagi, K. Hirayama, T. Tanaka and I. Kouno, Parasitol Res (2008) 102, pp. 1119–1127, See also * Flavogallonic acid References Hydrolysable tannins Trihydroxybenzoic acids Lactones Catechols Pyrogallols {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrolysable Tannin
A hydrolyzable tannin or pyrogallol-type tannin is a type of tannin that, on heating with hydrochloric or sulfuric acids, yields gallic or ellagic acids. At the center of a hydrolyzable tannin molecule, there is a carbohydrate (usually D-glucose but also cyclitols like quinic or shikimic acids). The hydroxyl groups of the carbohydrate are partially or totally esterified with phenolic groups such as gallic acid in gallotannins or ellagic acid in ellagitannins. Hydrolysable tannins are mixtures of polygalloyl glucoses and/or poly-galloyl quinic acid derivatives containing in between 3 up to 12 gallic acid residues per molecule. Hydrolyzable tannins are hydrolyzed by weak acids or weak bases to produce carbohydrate and phenolic acids. Examples of gallotannins are the gallic acid esters of glucose in tannic acid (C76H52O46), found in the leaves and bark of many plant species. Hydrolysable tannins can be extracted from different vegetable plants, such as chestnut wood (''Castanea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Shorea Laevifolia
''Shorea laevis'' is a species of tree in the family Dipterocarpaceae. It is native to Myanmar, Thailand, Sumatra, Peninsular Malaysia and Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and ea .... It is considered Vulnerable due to deforestation for agriculture and being logged for its timber. References laevis Trees of Thailand Trees of Myanmar Trees of Sumatra Trees of Peninsular Malaysia Trees of Borneo Plants described in 1922 Taxonomy articles created by Polbot {{Dipterocarpaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anogeissus Leiocarpus
''Anogeissus leiocarpa'' (African birch; bm, ngálǎma) is a tall deciduous tree native to the savannas of tropical Africa. It is the sole West African species of the genus ''Anogeissus'', a genus otherwise distributed from tropical central and east Africa through tropical Southeast Asia. ''Anogeissus leiocarpa'' germinates in the new soils produced by seasonal wetlands. It is a forest fringe plant, growing at the edges of the rainforest, although not deep in the rainforest. It also grows in savanna, and along riverbanks, where it forms gallery forests. The tree flowers in the rainy season, from June to October. The fruit are winged samaras, and are dispersed by ants. Ethnobotany It is one of the plants used to make ''bògòlanfini'', a traditional Malian mudcloth. Small branches with leaves are crushed to make one of the yellow dyes. The inner bark of the tree is used as a human and livestock anthelmintic for treating worms, and for treatment of a few protozoan dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminalia Avicennoides
''Terminalia avicennioides'' ( bm, Wolobugun) is a tree species in the genus '' Terminalia'' found in West Africa. Castalagin and flavogallonic acid dilactoneThe use of microfluorometric method for activity-guided isolation of antiplasmodial compound from plant extracts. M. N. Shuaibu, P. A. Wuyep, T. Yanagi, K. Hirayama, T. Tanaka and I. Kouno, Parasitol Res (2008) 102, pp. 1119–1127, are hydrolysable tannins found in ''T. avicennoides''. See also * Bògòlanfini Bògòlanfini or bogolan ( bm, bɔgɔlanfini; "mud cloth"; sometimes called mud-dyed cloth or mud-painted cloth in English) is a handmade Malian cotton fabric traditionally dyed with fermented mud. It has an important place in traditional Malian ..., a handmade Malian cotton fabric dyed yellow in wool solution, made from the leaves of ''T. avicennoides'' References External links avicennioides Plants described in 1832 {{Myrtales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavogallonic Acid
Flavogallonic acid is a hydrolysable tannin that can be found in valonea oak (''Quercus macrolepis'') in chestnut wood or in ''Terminalia myriocarpa''.Pharmacologically Active Ellagitannins from Terminalia myriocarpa. Mohamed S.A. Marzouk, Sayed A.A. El-Toumy, Fatma A. Moharram, Nagwa M.M. Shalaby and Amany A.E. Ahmed, Planta Med, 2002, 68(6), pages 523-527, See also * Flavogallonic acid dilactone Flavogallonic acid dilactone is a hydrolysable tannin that can be found in '' Rhynchosia volubilis'' seeds, in '' Shorea laevifolia'', in ''Anogeissus leiocarpus'' and ''Terminalia avicennoides ''Terminalia avicennioides'' ( bm, Wolobugun) is a ... References Hydrolysable tannins {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrolysable Tannins
A hydrolyzable tannin or pyrogallol-type tannin is a type of tannin that, on heating with hydrochloric or sulfuric acids, yields gallic or ellagic acids. At the center of a hydrolyzable tannin molecule, there is a carbohydrate (usually D-glucose but also cyclitols like quinic or shikimic acids). The hydroxyl groups of the carbohydrate are partially or totally esterified with phenolic groups such as gallic acid in gallotannins or ellagic acid in ellagitannins. Hydrolysable tannins are mixtures of polygalloyl glucoses and/or poly-galloyl quinic acid derivatives containing in between 3 up to 12 gallic acid residues per molecule. Hydrolyzable tannins are hydrolyzed by weak acids or weak bases to produce carbohydrate and phenolic acids. Examples of gallotannins are the gallic acid esters of glucose in tannic acid (C76H52O46), found in the leaves and bark of many plant species. Hydrolysable tannins can be extracted from different vegetable plants, such as chestnut wood (''Castan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactones
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] |
Catechols
Catechol ( or ), also known as pyrocatechol or 1,2-dihydroxybenzene, is a toxic organic compound with the molecular formula . It is the ''ortho'' isomer of the three isomeric benzenediols. This colorless compound occurs naturally in trace amounts. It was first discovered by destructive distillation of the plant extract catechin. About 20,000 tonnes of catechol are now synthetically produced annually as a commodity organic chemical, mainly as a precursor to pesticides, flavors, and fragrances. Catechol occurs as feathery white crystals that are very rapidly soluble in water. Isolation and synthesis Catechol was first isolated in 1839 by Edgar Hugo Emil Reinsch (1809–1884) by distilling it from the solid tannic preparation catechin, which is the residuum of catechu, the boiled or concentrated juice of ''Mimosa catechu'' (''Acacia catechu''). Upon heating catechin above its decomposition point, a substance that Reinsch first named ''Brenz-Katechusäure'' (burned catechu acid) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
