Terflavin B

	Terflavin B Terflavin B is an ellagitannin, a type of hydrolysable tannin. It can be found in ''Myrobalanus chebula'' (''Terminalia chebula''), the black chebulic, and in ''Terminalia catappa'', the Indian almond. It is formed from a nonahydroxytriphenic acid dilactone and a gallic acid Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6 H2( OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. I ... linked to a glucose molecules. References Ellagitannins {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ellagitannin The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds. Ellagitannins contain various numbers of hexahydroxydiphenoyl units, as well as galloyl units and/or sanguisorboyl units bounded to sugar moiety. In order to determine the quantity of every individual unit, the hydrolysis of the extracts with trifluoroacetic acid in methanol/water system is performed. Hexahydroxydiphenic acid, created after hydrolysis, spontaneously lactonized to ellagic acid, and sanguisorbic acid to sanguisorbic acid dilactone, while gallic acid remains intact. Ellagitannins generally form macrocycles, whereas gallotannins do not. Examples * Castalagin * Castalin * Casuarictin * Grandinin * Oeno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Terminalia Chebula ''Terminalia chebula'', commonly known as black- or chebulic myrobalan, is a species of '' Terminalia'', native to South Asia from India and Nepal east to southwest China (Yunnan), and south to Sri Lanka, Malaysia, and Vietnam.Flora of China''Terminalia chebula''/ref> In India, it is known as "Harad" in Hindi and Urdu, "Kadukkai" in Tamil, "Hirada" in Marathi, "Hilikha" in Assamese and "Horitoky" in Bengali. Taxonomy Swedish naturalist Anders Jahan Retzius described the species. Many varieties are known, such as: ''T. c.'' var. ''chebula'' – leaves and shoots hairless, or only hairy when very young ''T. c.'' var. ''tomentella'' – leaves and shoots silvery to orange hairy Description ''Terminalia chebula'' is a medium to large deciduous tree growing to tall, with a trunk up to in diameter. The leaves are alternate to subopposite in arrangement, oval, long and broad with a petiole. They have an acute tip, cordate at the base, margins entire, glabrous above with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Terminalia Catappa ''Terminalia catappa'' is a large tropical tree in the leadwood tree family, Combretaceae, native to Asia, Australia, the Pacific, Madagascar and Seychelles. Common names in English include country almond, Indian almond, Malabar almond, sea almond, tropical almond, beach almond and false kamani. Description The tree grows to tall, with an upright, symmetrical crown and horizontal branches. The fruit are corky and light, and dispersed by water. As the tree gets older, its crown becomes more flattened to form a spreading, vase shape. Its branches are distinctively arranged in tiers. The leaves are large, long and broad, ovoid, glossy dark green, and leathery. They are dry-season deciduous; before falling, they turn pinkish-reddish or yellow-brown, due to pigments such as violaxanthin, lutein, and zeaxanthin. The trees are monoecious, with distinct male and female flowers on the same tree. Both are in diameter, white to greenish, inconspicuous with no petals; they are produced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Nonahydroxytriphenic Acid Nonahydroxytriphenic acid is a moiety found in some ellagitannins such as roburin A, B,C and D, castalagin Castalagin is an ellagitannin, a type of hydrolyzable tannin, found in oak and chestnut wood and in the stem barks of '' Anogeissus leiocarpus'' and ''Terminalia avicennoides''. Castalagin is the diastereomer of vescalagin in C-1 of the glycosidi ... or grandinin.Roburin A, a dimeric ellagitannin from heartwood of Quercus robur. Hervé Du Penhoat, Michon V. M. F., Ohassan A., Shuyun Peng, Scalbert A. and Gage D., Phytochemistry, 1991, vol. 30, no 1, pages 329-332, References Ellagitannins Tricarboxylic acids {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Gallic Acid Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6 H2( OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. It is a white solid, although samples are typically brown owing to partial oxidation. Salts and esters of gallic acid are termed "gallates". Isolation and derivatives Gallic acid is easily freed from gallotannins by acidic or alkaline hydrolysis. When heated with concentrated sulfuric acid, gallic acid converts to rufigallol. Hydrolyzable tannins break down on hydrolysis to give gallic acid and glucose or ellagic acid and glucose, known as gallotannins and ellagitannins, respectively. Biosynthesis Gallic acid is formed from 3-dehydroshikimate by the action of the enzyme shikimate dehydrogenase to produce 3,5-didehydroshikimate. This latter compound aromatizes. Reactions Oxidation and oxidative coupling Alkaline solutions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]