hemiketal

RC(R′)(OH)OR″, a product of the addition of an alcohol to a ketone. In the ketose sugars, the h. formation is from an attack by an internal OH on the ketone carbonyl leading to intramolecular cyclization (furanose or pyranose); the h. forms of the sugars are involved in polysaccharide formation, as glycosyls or glycosides. SEE ALSO: hemiacetal, ketal.

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hemi·ke·tal (hem″ĭ-keґtəl) a derivative formed by a combination of a ketone group with an alcohol.

Medical dictionary. 2011.

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  • hemiketal — hemiacetalis statusas T sritis chemija formulė RCH(OH)OR, R₂C(OH)OR atitikmenys: angl. hemiacetal; hemiketal; semiacetal rus. полуацеталь; полукеталь; семиацеталь ryšiai: sinonimas – semiacetalis …   Chemijos terminų aiškinamasis žodynas

  • hemiketal — noun any hemiacetal derived from a ketone …   Wiktionary

  • Hemiketal — He|mi|ke|tal ↑ Halbacetal …   Universal-Lexikon

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