Stenophyllanin A
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Stenophyllanin A
Stenophyllanin A is an ellagitannin. It can be found in ''Cowania mexicana'', ''Coleogyne ramosissima'' and ''Quercus stenophylla ''Quercus salicina'' is an oak species found in Japan, South Korea and Taiwan. It is placed in subgenus ''Cerris'', section ''Cyclobalanopsis''. The larvae of the Japanese oakblue (''Arhopala japonica''), of ''Acrocercops vallata'' and ''Marumb ...''.Tannins and related compounds part 26: isolation and structures of stenophyllanins A, B, and C, novel tannins from Quercus stenophylla, G. Nonaka, H. Nishimura, I. Nishioka, J. Chem. Soc. Perkin Trans. 1, 1985, pp. 163–172, References Ellagitannins {{aromatic-stub ...
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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 * Oenothein B from ...
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Cowania Mexicana
''Purshia mexicana'' is a species of perennial flowering small tree in the rose family known by the common name Mexican cliffrose. It is native to western-northern Mexico, the region of the Sierra Madre Occidental cordillera. ''Purshia stansburyana'', native to the southwestern United States, has sometimes been included within ''P. mexicana''. In its mostly mountainous, or higher elevation habitat, it grows in woodlands, desert, and plateau habitat. Stenophyllanin A, a tannin, can be found in ''P. mexicana''. Distribution The range of Mexican cliffrose is from the western Mexican Plateau in the south, and the southern Sierra Madre Occidental cordillera north to a small region of northwest Sonora; it has a continuous range in the cordillera from Chihuahua south through Durango and Zacatecas, all mostly north of the Trans-Mexican Volcanic Belt The Trans-Mexican Volcanic Belt ( es, Eje Volcánico Transversal), also known as the Transvolcanic Belt and locally as the (''Snowy Mo ...
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Coleogyne Ramosissima
''Coleogyne ramosissima'' or blackbrush, is a low lying, dark grayish-green, aromatic,Turner, Raymond M. 1982. Great Basin desertscrub. In: Brown, David E., ed. Biotic communities of the American Southwest--United States and Mexico. Desert Plants. 4(1-4): 145–155. spiny, perennial, soft wooded shrub, native to the deserts of the southwestern United States.Mojave Desert Wildflowers, Pam MacKay, p18, 252Canyon Country Wildflowers, Damian Fagan, p 3, 105 It is called blackbrush because the gray branches darken when wet by rains. It is in the rose family (Rosaceae), and is the only species in the monotypic genus ''Coleogyne''. Growth pattern It has dense, intricate branches ("ramosissima" means "many branched"). Its dense branches form spiny tips. This plant forms vast pure stands across the desert floor and on scrubby slopes, giving the landscape a uniform dark-gray color. Vegetative types in which it dominates or is a codominate are called blackbrush scrub. It drops most of it ...
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Quercus Stenophylla
''Quercus salicina'' is an oak species found in Japan, South Korea and Taiwan. It is placed in subgenus ''Cerris'', section ''Cyclobalanopsis''. The larvae of the Japanese oakblue (''Arhopala japonica''), of ''Acrocercops vallata'' and ''Marumba sperchius'' feed on ''Q. salicina''. Stenophyllanin A, a tannin, and other quinic acid gallates can be found in ''Q. salicina''. The triterpene friedelin Friedelin is a triterpenoid chemical compound found in '' Azima tetracantha'', '' Orostachys japonica'', and ''Quercus stenophylla''. Friedelin is also found in the roots of the ''Cannabis ''Cannabis'' () is a genus of flowering plants in t ... can also be isolated from the leaves of the tree. References External links salicina Plants described in 1910 Trees of Japan Trees of South Korea Trees of Taiwan {{Quercus-stub ...
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