|
Coumarinolignoid
Coumarinolignoids are phenolic compounds formed from a lignan structure with a coumarin formed in place of one of the two phenylpropanoids. Examples * 2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one can be found on ''Paullinia pinnata'' * 5'-hydroxycleomiscosin B, found in ''Eurycorymbus cavaleriei'' * 5-Methoxypropacin found in ''Protium unifoliolatum'' * Moluccanin, found in ''Aleurites moluccanus'' * Aleuritin, found in ''Aleurites fordii'' * Durantin A and repenins, isolated from ''Duranta'' References Coumarinolignoids, {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Repenin
''Duranta erecta'' is a species of flowering shrub in the verbena family Verbenaceae, native from Mexico to South America and the Caribbean. It is widely cultivated as an ornamental plant in tropical and subtropical gardens throughout the world, and has become naturalized in many places. Common names include golden dewdrop, pigeon berry, and skyflower. Description ''Duranta erecta'' is a sprawling shrub or (infrequently) a small tree. It can grow to tall and can spread to an equal width. Mature specimens possess axillary thorns, which are often absent on younger specimens. The leaves are light green, elliptic to ovate, opposite, and grow up to long and broad, with a 1.5 cm petiole. The flowers are light-blue or lavender, produced in tight clusters located on terminal and axillary stems, sometimes appearing as panicles, frequently recurved or pendulous, blooming in summer. The fruit is a small globose yellow or orange berry, up to diameter and containing several seed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleuritin
Aleuritin is a coumarinolignoid found in the tree ''Aleurites fordii ''Vernicia fordii'', usually known as the tung tree (, ''tóng'') is a species of flowering plant in the spurge family native to southern China, Myanmar, and northern Vietnam. It is a small to medium-sized deciduous tree growing to 20 m tall, wi ...''. References Coumarinolignoids O-methylated natural phenols {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paullinia Pinnata
''Paullinia pinnata'' is a flowering plant species in the genus of ''Paullinia'' found in South America and Africa. The long flexible stems of ''P. pinnata'' are used to poison fish in shallow pools, as described by the English naturalist Henry Walter Bates in his book ''The Naturalist on the River Amazons''. Chemistry The plant contains the ceramide paullinomide A, β-amyrin, steroids, the coumarinolignoid 2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one, 5α-poriferastane-3ß,6α-diol and l-quebrachitol. It also contains the triterpenoids lupeyl steryl ether, 3-oxo-11α-hydroxyl-20(29)lupen and the lupeol-3-isovanniloyl ester paullinoyl (3-O-isovanilloyl-3R,5R,8R,9R,10R,13R,14S,17S,18R,19R-lup-20(29)-en), and the flavone glycosides diosmetin-7-O-(2‘ ‘-O-β-d-apiofuranosyl-6‘ ‘-acetyl-β-d-glucopyranoside) and tricetin-4‘-O-methyl-7-O-(2‘ ‘-O-β-d-apiofuranosyl-6‘ ‘-acetyl-β-d-glucopyranoside).Two New Flav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleurites Fordii
''Vernicia fordii'', usually known as the tung tree (, ''tóng'') is a species of flowering plant in the spurge family native to southern China, Myanmar, and northern Vietnam. It is a small to medium-sized deciduous tree growing to 20 m tall, with a spreading crown. The bark is smooth and thin, and bleeds latex if cut. The leaves are alternate, simple, 4.5–25 cm long and 3.5–22 cm broad, heart-shaped or with three shallow, maple-like lobes, green above and below, red conspicuous glands at the base of the leaf, and with a 5.5–26 cm long petiole. The flowers are 2.5–3.5 cm diameter, with five pale pink to purple petals with streaks of darker red or purple in the throat; it is monoecious with individual flowers either male or female, but produced together in the inflorescences. The flowers appear before or with the leaves in loose, terminal clusters. The fruit is a hard, woody pear-shaped berry 4–6 cm long and 3–5 cm diameter, containing fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lignan
The lignans are a large group of low molecular weight polyphenols found in plants, particularly seeds, whole grains, and vegetables. The name derives from the Latin word for "wood". Lignans are precursors to phytoestrogens. They may play a role as antifeedants in the defense of seeds and plants against herbivores. Biosynthesis and metabolism Lignans and lignin differ in their molecular weight, the former being small and soluble in water, the latter being high polymers that are undigestable. Both are polyphenolic substances derived by oxidative coupling of monolignols. Thus, most lignans feature a C18 cores, resulting from the dimerization of C9 precursors. The coupling of the lignols occurs at C8. Eight classes of lignans are: "furofuran, furan, dibenzylbutane, dibenzylbutyrolactone, aryltetralin, arylnaphthalene, dibenzocyclooctadiene, and dibenzylbutyrolactol." Many lignans are metabolized by mammalian gut microflora, producing so-called enterolignans. Food sources Flax s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coumarin
Coumarin () or 2''H''-chromen-2-one is an aromatic organic chemical compound with formula . Its molecule can be described as a benzene molecule with two adjacent hydrogen atoms replaced by a lactone-like chain , forming a second six-membered heterocycle that shares two carbons with the benzene ring. It can be placed in the benzopyrone chemical class and considered as a lactone. Coumarin is a colorless crystalline solid with a sweet odor resembling the scent of vanilla and a bitter taste. It is found in many plants, where it may serve as a chemical defense against predators. By inhibiting synthesis of vitamin K, a related compound is used as the prescription drug warfarin – an anticoagulant – to inhibit formation of blood clots, deep vein thrombosis, and pulmonary embolism. Etymology Coumarin is derived from ''coumarou'', the French word for the tonka bean. The word ''tonka'' for the tonka bean is taken from the Galibi (Carib) tongue spoken by natives of French G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one
A coxless pair is a rowing boat used in the sport of competitive rowing. It is designed for two rowers, who propel the boat with sweep oars. The crew consists of a pair of rowers, each having one oar, one on the stroke side (rower's right hand side) and one on the bow side (rower's lefthand side). As the name suggests, there is no coxswain on such a boat, and the two rowers must co-ordinate steering and the proper timing of oar strokes between themselves or by means of a steering installation which is operated by foot from one of the rowers. The equivalent boat when it is steered by a cox is referred to as a "coxed pair". Racing boats (often called "shells") are long, narrow, and broadly semi-circular in cross-section in order to reduce drag to a minimum. Originally made from wood, shells are now almost always made from a composite material (usually carbon-fibre reinforced plastic) for strength and weight advantages. Pairs have a fin towards the rear, to help prevent r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurycorymbus Cavaleriei
''Eurycorymbus cavaleriei'' is a species of plant in the family Sapindaceae and the single species in the genus ''Eurycorymbus''. It is found in China and Taiwan, where it is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References * Flora of China Flora of Taiwan Near threatened plants Monotypic Sapindaceae genera Taxonomy articles created by Polbot Dodonaeoideae Taxa named by Heinrich von Handel-Mazzetti {{sapindales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protium Unifoliolatum , a commercial name for pantoprazole, a proton pump inhibitor drug
{{disambiguation ...
Protium may refer to: * Protium (isotope) or hydrogen-1, the most common isotope of the element hydrogen, with one proton, one electron, and no neutrons * ''Protium'' (plant), a genus of chiefly tropical American trees in the family Burseraceae, having fragrant wood * Cadence Protium, hardware accelerated prototyping platforms for early software development by Cadence Design Systems See also * Protonix Pantoprazole, sold under the brand name Protonix, among others, is a proton pump inhibitor used for the treatment of stomach ulcers, short-term treatment of erosive esophagitis due to gastroesophageal reflux disease (GERD), maintenance of heali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Repenin")
.svg "Click for more on -> 2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one")