glycoside


glycoside
Condensation product of a sugar with any other radical involving the loss of the OH of the hemiacetal or hemiketal of the sugar, leaving the anomeric carbon as the link; thus, the condensation through the carbon with an alcohol, which loses its hydrogen on its hydroxyl group, yields an alcohol-g. (or a glycosido-alcohol); links with a purine or pyrimidine –NH– group yield glycosyl (or N-glycosyl) compounds.
- cardiac glycosides generic term for a large number of drugs with the capacity to increase the force of contraction of the failing heart. Examples include digitalis (foxglove) extracts as well as those obtained from other plant and animal sources.
- cyanogenic g. a g. capable of generating CN upon metabolism ( E.G., amygdalin).

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gly·co·side 'glī-kə-.sīd n any of numerous sugar derivatives that contain a nonsugar group attached through an oxygen or nitrogen bond and that on hydrolysis yield a sugar (as glucose)
gly·co·sid·ic .glī-kə-'sid-ik adj
gly·co·sid·i·cal·ly -i-k(ə-)lē adv

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n.
a compound formed by replacing the hydroxyl (-OH) group of a sugar by another group. (If the sugar is glucose the compound is known as a glucoside.) Glycosides found in plants include some pharmacologically important products (such as digitalis). Other plant glycosides are natural food toxins, present in cassava, almonds, and other plant products, and may yield hydrogen cyanide if the plant is not prepared properly before eating.

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gly·co·side (gliґko-sīd) any compound that contains a carbohydrate molecule (sugar), particularly any such natural product in plants, convertible, by hydrolytic cleavage, into sugar and a nonsugar component (aglycon), and named specifically for the sugar contained, as glucoside (glucose), pentoside (pentose), fructoside (fructose), etc.

Medical dictionary. 2011.

Look at other dictionaries:

  • glycoside — glycoside. См. гликозид. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • glycoside — [glī′kə sīd΄] n. [Fr < glycose (altered after Gr glykys), for glucose, GLUCOSE + ide, IDE] any of a group of sugar derivatives, widely distributed in plants, which on hydrolysis yield a sugar and one or more other substances glycosidic [glī… …   English World dictionary

  • Glycoside — Genin redirects here. For the ninja rank, see Ninja#Development. Salicin, a glycoside related to aspirin …   Wikipedia

  • Glycoside — Grundstruktur eines Glycosids, das in diesem konkreten Fall auf D Glucose basiert. R im Aglycon XR kann ein beliebiger organischer Rest sein (mit XR ≠ OH, Acylrest O–(CO)–R ). Falls • X = O, S oder Se ist, handelt es sich um ein Glykosid,… …   Deutsch Wikipedia

  • glycoside — glikozidas statusas T sritis chemija apibrėžtis Junginys, susidaręs sacharidui susijungus su aglikono HO– arba H₂N– grupe. atitikmenys: angl. glycoside rus. гликозид …   Chemijos terminų aiškinamasis žodynas

  • glycoside — noun Etymology: alteration of glucoside Date: 1855 any of numerous sugar derivatives that contain a nonsugar group bonded to an oxygen or nitrogen atom and that on hydrolysis yield a sugar (as glucose) • glycosidic adjective • glycosidically… …   New Collegiate Dictionary

  • Glycoside — Hétéroside La Salicyline est un hétéroside de Glucose. Les hétérosides (ou glucosides) sont des molécules nées de la condensation (association) d’oses et de substances non glucidiques (appelées aglycones ou génines). Exemple&# …   Wikipédia en Français

  • glycoside — glycosidic /gluy keuh sid ik/, adj. /gluy keuh suyd /, n. Biochem. any of the class of compounds that yield a sugar and an aglycon upon hydrolysis. [1925 30; GLYCOSE + IDE] * * * Any of a wide variety of naturally occurring organic compounds in… …   Universalium

  • glycoside — noun A molecule in which a sugar group is bound to a non sugar group (the corresponding glycone) by a nitrogen or oxygen atom. Glycosides yield a sugar after undergoing hydrolysis. See Also: glycosidase, glycosidation, glucoside, glycosidic …   Wiktionary

  • glycoside — (entrée créée par le supplément) (gli ko zi d ) s. f. Terme de chimie. Produit naturel pouvant donner de la glycose sous l influence des agents d hydratation …   Dictionnaire de la Langue Française d'Émile Littré


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