|
Dihydroflavonols
The flavanonols (with two "o"s a.k.a. 3-hydroxyflavanone or 2,3-dihydroflavonol) are a class of flavonoids that use the 3-hydroxy-2,3-dihydro-2-phenylchromen-4-one (IUPAC name) backbone. Some examples include: * Taxifolin (or Dihydroquercetin) * Aromadedrin (or Dihydrokaempferol) * Engeletin (or Dihydrokaempferol-3-rhamnoside) Metabolism * Flavanone 3-dioxygenase * Flavonol synthase * Dihydroflavonol 4-reductase Glycosides Glycosides ( chrysandroside A and chrysandroside B) can be found in the roots of '' Gordonia chrysandra''. Xeractinol, a dihydroflavonol C-glucoside, can be isolated from the leaves of ''Paepalanthus argenteus var. argenteus''. Dihydro-flavonol glycosides ( astilbin, neoastilbin, isoastilbin, neoisoastilbin, (2''R'', 3''R'')-taxifolin-3'-''O''-β-D-pyranoglucoside) have been identified in the rhizome of ''Smilax glabra ''Smilax glabra'', sarsaparilla, is a plant species in the genus ''Smilax''. It is native to flora of China, China, the Himalayas, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dihydroflavonol 4-reductase
In enzymology, a dihydrokaempferol 4-reductase () is an enzyme that catalyzes the chemical reaction :cis-3,4-leucopelargonidin + NADP+ \rightleftharpoons (+)-dihydrokaempferol + NADPH + H+ Thus, the two substrates of this enzyme are cis-3,4-leucopelargonidin and NADP+, whereas its 3 products are (+)-dihydrokaempferol, NADPH, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is cis-3,4-leucopelargonidin:NADP+ 4-oxidoreductase. Other names in common use include dihydroflavanol 4-reductase (DFR), dihydromyricetin reductase, NADPH-dihydromyricetin reductase, and dihydroquercetin reductase. This enzyme participates in flavonoid biosynthesis. Function Anthocyanidins, common plant pigments, are further reduced by the enzyme dihydroflavonol 4-reductase (DFR) to the corresponding colorless leucoanthocyanidins. DFR uses dihydromyriceti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavanonol Num
The flavanonols (with two "o"s a.k.a. 3-hydroxyflavanone or 2,3-dihydroflavonol) are a class of flavonoids that use the 3-hydroxy-2,3-dihydro-2-phenylchromen-4-one (IUPAC name) backbone. Some examples include: * Taxifolin (or Dihydroquercetin) * Aromadedrin (or Dihydrokaempferol) * Engeletin (or Dihydrokaempferol-3-rhamnoside) Metabolism * Flavanone 3-dioxygenase * Flavonol synthase * Dihydroflavonol 4-reductase Glycosides Glycosides ( chrysandroside A and chrysandroside B) can be found in the roots of '' Gordonia chrysandra''. Xeractinol, a dihydroflavonol C-glucoside, can be isolated from the leaves of ''Paepalanthus argenteus var. argenteus''. Dihydro-flavonol glycosides ( astilbin, neoastilbin, isoastilbin, neoisoastilbin, (2''R'', 3''R'')-taxifolin Taxifolin (5,7,3',4'-flavan-on-ol), also known as dihydroquercetin, belongs to the subclass flavanonols in the flavonoids, which in turn is a class of polyphenols. Stereocenters Taxifolin has two stereocenters on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeractinol
Xeractinol is a flavanonol The flavanonols (with two "o"s a.k.a. 3-hydroxyflavanone or 2,3-dihydroflavonol) are a class of flavonoids that use the 3-hydroxy-2,3-dihydro-2-phenylchromen-4-one (IUPAC name) backbone. Some examples include: * Taxifolin (or Dihydroquercetin) * ..., a type of flavonoid. It is a glucoside that can be found in the leaves of '' Paepalanthus argenteus'' (Eriocaulaceae). References External links * Flavanonol glucosides C-glycoside natural phenols {{Aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxifolin
Taxifolin (5,7,3',4'-flavan-on-ol), also known as dihydroquercetin, belongs to the subclass flavanonols in the flavonoids, which in turn is a class of polyphenols. Stereocenters Taxifolin has two stereocenters on the C-ring, as opposed to quercetin which has none. For example, (+)-taxifolin has (2R,3R)-configuration, making it 1 out of 4 stereoisomers that comprise 2 pairs of enantiomers. Natural occurrences Taxifolin is found in non-glutinous rice boiled with adzuki bean (adzuki-meshi). It can be found in conifers like the Siberian larch, ''Larix sibirica'', in Russia, in ''Pinus roxburghii'', in ''Cedrus deodara'' and in the Chinese yew, '' Taxus chinensis var. mairei''. It is also found in the silymarin extract from the milk thistle seeds. Taxifolin is present in vinegars aged in cherry wood. Taxifolin, and flavonoids in general, can be found in many beverages and products. Specifically, taxifolin is found in plant-based foods like fruit, vegetables, wine, tea, and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoisoastilbin
Astilbin is a flavanonol, a type of flavonoid. Astilbin is the (2R-trans)-isomer; neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer. Natural occurrences Astilbin can be found in St John's wort (''Hypericum perforatum'', Clusiaceae, subfamily Hypericoideae, formerly often considered a full family Hypericaceae), in ''Dimorphandra mollis'' (Fava d'anta, Fabaceae), in the leaves of ''Harungana madagascariensis'' (Hypericaceae), [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isoastilbin
Astilbin is a flavanonol, a type of flavonoid. Astilbin is the (2R-trans)-isomer; neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer. Natural occurrences Astilbin can be found in St John's wort (''Hypericum perforatum'', Clusiaceae, subfamily Hypericoideae, formerly often considered a full family Hypericaceae), in '' Dimorphandra mollis'' (Fava d'anta, Fabaceae), in the leaves of ''Harungana madagascariensis'' (Hypericaceae), [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoastilbin
Astilbin is a flavanonol, a type of flavonoid. Astilbin is the (2R-trans)-isomer; neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer. Natural occurrences Astilbin can be found in St John's wort (''Hypericum perforatum'', Clusiaceae, subfamily Hypericoideae, formerly often considered a full family Hypericaceae), in '' Dimorphandra mollis'' (Fava d'anta, Fabaceae), in the leaves of ''Harungana madagascariensis'' (Hypericaceae), [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astilbin
Astilbin is a flavanonol, a type of flavonoid. Astilbin is the (2R-trans)-isomer; neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer. Natural occurrences Astilbin can be found in Hypericum perforatum, St John's wort (''Hypericum perforatum'', Clusiaceae, subfamily Hypericoideae, formerly often considered a full family Hypericaceae), in ''Dimorphandra mollis'' (Fava d'anta, Fabaceae), in the leaves of ''Harungana madagascariensis'' (Hypericaceae), [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paepalanthus Argenteus
''Paepalanthus bromelioides'' is a species in the flowering plant family Eriocaulaceae. This family is placed in the Poales, close to the Bromeliaceae, whose morphology this genus shares. ''Paepalanthus bromelioides'' is native to Cerrado, the area in which the carnivorous bromeliad ''Brocchinia reducta'' is also found. There is some speculation that the occasional insects trapped in the urn of this plant are evidence of its being a carnivorous plant Carnivorous plants are plants that derive some or most of their nutrients from trapping and consuming animals or protozoans, typically insects and other arthropods. Carnivorous plants still generate some of their energy from photosynthesis ... or protocarnivorous, possible deriving nutrients from termite mounds that termites frequently make in the plants' roots. References Eriocaulaceae Carnivorous plants {{Poales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gordonia Chrysandra
Gordonia may refer to: Biology * ''Gordonia'' (plant), a genus of flowering plants native to Southeast Asia and the Americas * ''Gordonia'' (bacterium), a genus of bacteria * ''Gordonia'' (synapsid), an extinct animal from the Permian Other uses *Gordonia (youth movement), a Zionist youth movement * ''Gordonia'' (film), a 2010 documentary * 305 Gordonia, an asteroid * USS ''Gordonia'', an American ship * Gordonia District, a district of Cape Province, South Africa See also *Gordon (other) Gordon may refer to: People * Gordon (given name), a masculine given name, including list of persons and fictional characters * Gordon (surname), the surname * Gordon (slave), escaped to a Union Army camp during the U.S. Civil War * Clan Gordon, ... {{disambiguation Genus disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavonoid
Flavonoids (or bioflavonoids; from the Latin word ''flavus'', meaning yellow, their color in nature) are a class of polyphenolic secondary metabolites found in plants, and thus commonly consumed in the diets of humans. Chemically, flavonoids have the general structure of a 15-carbon skeleton, which consists of two phenyl rings (A and B) and a heterocyclic ring (C, the ring containing the embedded oxygen). This carbon structure can be abbreviated C6-C3-C6. According to the IUPAC nomenclature, they can be classified into: *flavonoids or bioflavonoids * isoflavonoids, derived from 3-phenyl chromen-4-one (3-phenyl-1,4- benzopyrone) structure *neoflavonoids, derived from 4-phenyl coumarine (4-phenyl-1,2- benzopyrone) structure The three flavonoid classes above are all ketone-containing compounds and as such, anthoxanthins (flavones and flavonols). This class was the first to be termed bioflavonoids. The terms flavonoid and bioflavonoid have also been more loosely used to descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
