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Norbergenin
Norbergenin is a chemical compound. It is the ''O''-demethylated derivative of bergenin. It can be isolated from rhizomes of ''Bergenia stracheyi ''Bergenia stracheyi'' is a plant species in the genus ''Bergenia'' found in the Western Himalayas, from 2700 to 4700 m, Afghanistan and Tajikistan Tajikistan (, ; tg, Тоҷикистон, Tojikiston; russian: Таджикистан, Ta ...''. References Pyrogallols Lactones Oxygen heterocycles Heterocyclic compounds with 3 rings {{phenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergenin
Bergenin, alias cuscutin, is trihydroxybenzoic acid glycoside. It is the C-glycoside of 4-O-methyl gallic acid. It possesses an O-demethylated derivative called norbergenin. These are chemical compounds and drugs of Ayurveda, commonly known as Paashaanbhed. It shows a potent immunomodulatory effect. Bergenin can be isolated from ''Bergenia'' species like '' Bergenia ciliata'' and '' Bergenia ligulata'', from rhizomes of ''Bergenia stracheyi''. It is also found in the stem bark of ''Dryobalanops aromatica'', in ''Ardisia elliptica ''Ardisia elliptica'' is an evergreen tree, also known as the shoebutton ardisia, duck's eye and coralberry, native to the west coast of India, Sri Lanka, Indochina, Malaysia, Indonesia and New Guinea. It is a prolific reproducer which has made i ...'' and in '' Mallotus japonicus''.Hepatoprotective effects of bergenin, a major constituent of Mallotus japonicus, on carbon tetrachloride-intoxicated rats. Lim HwaKyung, Kim HackSeang, Choi HongSerck, Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergenia Stracheyi
''Bergenia stracheyi'' is a plant species in the genus ''Bergenia'' found in the Western Himalayas, from 2700 to 4700 m, Afghanistan and Tajikistan. Bergenin and norbergenin Norbergenin is a chemical compound. It is the ''O''-demethylated derivative of bergenin. It can be isolated from rhizomes of ''Bergenia stracheyi ''Bergenia stracheyi'' is a plant species in the genus ''Bergenia'' found in the Western Himalayas ... are chemical compounds that can be isolated from rhizomes of ''B. stracheyi''.Immunomodulatory effect of bergenin and norbergenin against adjuvant-induced arthritis—A flow cytometric study Nighat Nazira, Surrinder Koulb, Mushtaq A. Qurishia, Sachin C. Tanejab, Sheikh F. Ahmadc, Sarang Banic and Ghulam N. Qazi, Journal of Ethnopharmacology, Volume 112, Issue 2, 13 June 2007, pp. 401-405, Cultivars * ''Bergenia stracheyi 'Alba * ''Bergenia stracheyi 'Afghanica References External links stracheyi Plants described in 1868 {{Saxifragaceae-stub ... [...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] |
Oxygen Heterocycles
Oxygen is the chemical element with the chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen Group (periodic table), group in the periodic table, a highly Chemical reaction, reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other chemical compound, compounds. Oxygen is Earth's Abundance of the chemical elements, most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element chemical bond, bind to form Allotropes of oxygen#Dioxygen, dioxygen, a colorless and odorless diatomic molecule, diatomic gas with the formula . Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has Geological history of oxygen, changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.Atkins, P.; Jones, L.; Laverman, L. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
