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Dammarene
Dammarenes are derivatives of dammaranes that have a double bond. These compounds are often composed of saponins, examples include Protopanaxadiol Protopanaxadiol (PPD) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic terpene sapogenin found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). Just what protopanaxadio ... and triol, Dammarenediol I and II. See also * Dammarenediol II synthase References Triterpenes {{steroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dammarene
Dammarenes are derivatives of dammaranes that have a double bond. These compounds are often composed of saponins, examples include Protopanaxadiol Protopanaxadiol (PPD) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic terpene sapogenin found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). Just what protopanaxadio ... and triol, Dammarenediol I and II. See also * Dammarenediol II synthase References Triterpenes {{steroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dammarenediol II Synthase
Dammarenediol II synthase (, ''dammarenediol synthase'', ''2,3-oxidosqualene (20S)-dammarenediol cyclase'', ''DDS'', ''(S)-squalene-2,3-epoxide hydro-lyase (dammarenediol-II forming)'') is an enzyme with systematic name ''(3S)-2,3-epoxy-2,3-dihydrosqualene hydro-lyase (dammarenediol-II forming)''. This enzyme catalyses the following chemical reaction : dammarenediol II \rightleftharpoons (3''S'')-2,3-epoxy-2,3-dihydrosqualene + H2O The reaction occurs in the reverse direction. References External links * EC 4.2.1 {{Enzyme-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dammarane
Dammarane is a tetracyclic triterpene found in sapogenins (forming triterpenoid saponins) like those of ginseng (ginsenosides: panaxatriol and protopanaxadiol). Compounds of the series were first isolated from and named after dammar resin, a natural resin from tropical trees of the Dipterocarp family. Mills J.S. (1956) "The Constitution of the Neutral, Tetracyclic Triterpenes of Dammar Resin" ''Journal of the Chemical Society'' 2196-2202 References External links Numbering of dammarane according to IUPAC Recommendations Steroids Triterpenes {{steroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Bond
In chemistry, a double bond is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond. Double bonds occur most commonly between two carbon atoms, for example in alkenes. Many double bonds exist between two different elements: for example, in a carbonyl group between a carbon atom and an oxygen atom. Other common double bonds are found in azo compounds (N=N), imines (C=N), and sulfoxides (S=O). In a skeletal formula, a double bond is drawn as two parallel lines (=) between the two connected atoms; typographically, the equals sign is used for this. Double bonds were first introduced in chemical notation by Russian chemist Alexander Butlerov. Double bonds involving carbon are stronger and shorter than single bonds. The bond order is two. Double bonds are also electron-rich, which makes them potentially more reactive in the presence of a strong electron acceptor (as in addition reactions of the halogens). File:Ethene structural.svg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saponin
Saponins (Latin "sapon", soap + "-in", one of), also selectively referred to as triterpene glycosides, are bitter-tasting usually toxic plant-derived organic chemicals that have a foamy quality when agitated in water. They are widely distributed but found particularly in soapwort (genus Saponaria), a flowering plant, the soapbark tree (''Quillaja saponaria'') and soybeans (''Glycine max'' L.). They are used in soaps, medicinals, fire extinguishers, speciously as dietary supplements, for synthesis of steroids, and in carbonated beverages (the head on a mug of root beer). Structurally, they are glycosides, sugars bonded to another organic molecule, usually a steroid or triterpene, a steroid building block. Saponins are both water and fat soluble, which gives them their useful soap properties. Some examples of these chemicals are glycyrrhizin, licorice flavoring; and quillaia (alt. quillaja), a bark extract used in beverages. Uses The saponins are a subclass of terpenoids, the larges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protopanaxadiol
Protopanaxadiol (PPD) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic terpene sapogenin found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). Just what protopanaxadiol's metabolites do inside the human body is still unclear. One study suggests it has rapid, non-genomic effects on endothelial cells, binding to the glucocorticoid and oestrogen beta receptors. The study also showed an increase of intracellular calcium ion concentration. See also * Protopanaxatriol Protopanaxatriol (PPT) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic triterpene sapogenins found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). See also * Panaxatr ... References Triterpenes Triols Steroids {{alcohol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protopanaxatriol
Protopanaxatriol (PPT) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic triterpene sapogenins found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). See also * Panaxatriol * Protopanaxadiol Protopanaxadiol (PPD) is an organic compound characterizing a group of ginsenosides. It is a dammarane-type tetracyclic terpene sapogenin found in ginseng (''Panax ginseng'') and in notoginseng (''Panax pseudoginseng''). Just what protopanaxadi ... References {{alcohol-stub Triterpenes Tetrols Steroids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Cell Rep
''Plant Cell Reports'' is a monthly peer-reviewed scientific journal In academic publishing, a scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. Content Articles in scientific journals are mostly written by active scientists such as s .... It was established in 1981 and is published by Springer Science+Business Media. External links * Chemistry journals Springer Science+Business Media academic journals English-language journals Monthly journals Publications established in 1981 {{botany-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetrahedron Letters
''Tetrahedron Letters'' is a weekly international journal for rapid publication of full original research papers in the field of organic chemistry. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor of 2.415. Indexing ''Tetrahedron Letters'' is indexed in: References See also *''Tetrahedron In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners. The tetrahedron is the simplest of all the o ...'' *'' Tetrahedron: Asymmetry'' Chemistry journals Weekly journals Publications established in 1959 Elsevier academic journals {{chem-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
