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Quadrangularin A
Quadrangularin A is an oligostilbene found in ''Cissus quadrangularis'' and in '' Parthenocissus laetevirens''.Characterization of polyphenol compounds from the roots and stems of Parthenocissus laetevirens by high-performance liquid chromatography/tandem mass spectrometry. Juanjuan Chen, Shan He, Hui Mao, Cuirong Sun and Yuanjiang Pan, Rapid Commun. Mass Spectrom., 2009, volume 23, pages 737–744, It is a resveratrol dimer Dimer may refer to: * Dimer (chemistry), a chemical structure formed from two similar sub-units ** Protein dimer, a protein quaternary structure ** d-dimer * Dimer model, an item in statistical mechanics, based on ''domino tiling'' * Julius Dimer ( .... References Resveratrol oligomers Stilbenoid dimers {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligostilbene
Oligostilbenoids (oligo- or polystilbenes) are oligomeric forms of stilbenoids. Some molecules are large enough to be considered polyphenols and constitute a class of tannins. Examples Dimers * Ampelopsin A * Epsilon-viniferin * Pallidol * Quadrangularin A Trimers * α-Viniferin * Ampelopsin E * ''trans''-Diptoindonesin B * Gnetin H Tetramers * cajyphenol A * cajyphenol B * Flexuosol A * Hemsleyanol D * Hopeaphenol * Vaticanol B * R2-Viniferin (syn. Vitisin A) Modified * Diptoindonesin C can be isolated from the bark of '' Shorea pinanga'' Other * Diptoindonesin F can be isolated from the bark of ''Shorea gibbosa'' Glycosides * Diptoindonesin A Diptoindonesin A is a C- glucoside of ε-viniferin isolated from the two Dipterocarpaceae '' Shorea seminis'' and ''Dryobalanops aromatica ''Dryobalanops aromatica'', commonly known as Borneo camphor, camphor tree, Malay camphor, or Sumatran c ... References External links * {{oligostilbenoid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cissus Quadrangularis
Cissus quadrangularis is a perennial plant of the grape family. It is commonly known as veldt grape, winged treebine or adamant creeper. The species is native to tropical Asia, the Arabian Peninsula and much of Africa. Description ''Cissus quadrangularis'' reaches a height of and has quadrangular-sectioned branches with internodes long and wide. Along each angle is a leathery edge. Toothed trilobe leaves wide appear at the nodes. Each has a tendril emerging from the opposite side of the node. Racemes of small white, yellowish, or greenish flowers; globular berries are red when ripe. ''Cissus quadrangularis'' is an evergreen climber growing to by at a fast rate. It is hardy to zone (UK) 10. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very acid and very alkaline soils. It cannot grow in the shade. It prefers dry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parthenocissus Laetevirens
''Parthenocissus laetevirens'' is a climbing plant species in the genus ''Parthenocissus'' found in China. ''Parthenocissus laetevirens'' contains the stilbene oligomers laetevirenol A, B, C, D and E, the stilbene tetramers laetevirenol F and G as well as the dimers of resveratrol parthenocissin A, quadrangularin A, pallidol and amurensin A Amurensin A is an oligostilbene isolated from the roots of ''Vitis amurensis ''Vitis amurensis'', the Amur grape, is a species of grape native to the Asian continent. Its name comes from the Amur Valley in Russia and China. It is very resi ....Characterization of polyphenol compounds from the roots and stems of Parthenocissus laetevirens by high-performance liquid chromatography/tandem mass spectrometry. Juanjuan Chen, Shan He, Hui Mao, Cuirong Sun and Yuanjiang Pan, Rapid Commun. Mass Spectrom., 2009, volume 23, pages 737–744, References laetevirens Plants described in 1912 {{Vitaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resveratrol
Resveratrol (3,5,4′-trihydroxy-''trans''-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts. Although commonly used as a dietary supplement and studied in laboratory models of human diseases, there is no high-quality evidence that resveratrol improves lifespan or has a substantial effect on any human disease. Research Resveratrol has been studied for its potential therapeutic use, with little evidence of anti-disease effects or health benefits in humans. Cardiovascular disease There is no evidence of benefit from resveratrol in people who already have heart disease. A 2018 meta-analysis found no effect on systolic or diastolic blood pressure; a sub-analysis revealed a 2 mmHg decrease in systolic pressure only from res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dimer (chemistry)
A dimer () ('' di-'', "two" + ''-mer'', "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. Dimers also have significant implications in polymer chemistry, inorganic chemistry, and biochemistry. The term ''homodimer'' is used when the two molecules are identical (e.g. A–A) and ''heterodimer'' when they are not (e.g. A–B). The reverse of dimerization is often called dissociation. When two oppositely charged ions associate into dimers, they are referred to as ''Bjerrum pairs'', after Niels Bjerrum. Noncovalent dimers Anhydrous carboxylic acids form dimers by hydrogen bonding of the acidic hydrogen and the carbonyl oxygen. For example, acetic acid forms a dimer in the gas phase, where the monomer units are held together by hydrogen bonds. Under special conditions, most OH-containing molecules form dimers, e.g. the water dimer. Excimers and exciplexes are excited structures with a short lifetime. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resveratrol Oligomers
Resveratrol (3,5,4′-trihydroxy-''trans''-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts. Although commonly used as a dietary supplement and studied in laboratory models of human diseases, there is no high-quality evidence that resveratrol improves lifespan or has a substantial effect on any human disease. Research Resveratrol has been studied for its potential therapeutic use, with little evidence of anti-disease effects or health benefits in humans. Cardiovascular disease There is no evidence of benefit from resveratrol in people who already have heart disease. A 2018 meta-analysis found no effect on systolic or diastolic blood pressure; a sub-analysis revealed a 2 mmHg decrease in systolic pressure only from r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
