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Withanolides are a group of at least 300 naturally occurring steroids built on an ergostane skeleton. They occur as secondary metabolites primarily in genera of the Nightshade family, for example in the tomatillo. Structurally, withanolides consist of a steroid backbone bound to a lactone or one of its derivatives; they are produced via oxidation of steroids. It remains unknown to what end withanolides are produced; they may act as a deterrent for feeding insect larvae and other herbivores.

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  • Withanolide (de)
  • Witanolide (it)
  • Withanolide (nl)
  • Witanolidy (pl)
  • Withanolide (en)
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  • Withanolide sind eine Gruppe von mindestens 300 natürlich vorkommenden chemischen Verbindungen. Chemisch handelt es sich um mit einem Steroidgerüst verbundene Lactone mit 28 Kohlenstoffatomen beziehungsweise deren Lactole oder Seco-Derivate; sie entstehen durch Oxidation von Steroiden. (de)
  • Withanolide is een groep van minstens 300 van nature voorkomende chemische verbindingen. Deze secundaire plantaardige stoffen zijn hoofdzakelijk afkomstig van planten van het geslacht nachtschadefamilie. Ze bestaan uit steroïdale lactonverbindingen met 28 koolstofatomen. Er zijn dertien geslachten uit de nachtschadefamilie waarin withanoliden voorkomen, waaronder: Physalis, Tomatillo en Withania. (nl)
  • Witanolidy – steroidowe laktony występujące w roślinach, odznaczające się dużą aktywnością biologiczną; m.in. działanie cytostatyczne, przeciwbakteryjne, przeciwnowotworowe. Występują np. w korzeniach i częściach zielonych subtropikalnej rośliny Withania somnifera (psiankowate). (pl)
  • Withanolides are a group of at least 300 naturally occurring steroids built on an ergostane skeleton. They occur as secondary metabolites primarily in genera of the Nightshade family, for example in the tomatillo. Structurally, withanolides consist of a steroid backbone bound to a lactone or one of its derivatives; they are produced via oxidation of steroids. It remains unknown to what end withanolides are produced; they may act as a deterrent for feeding insect larvae and other herbivores. (en)
  • I witanolidi sono un gruppo di almeno 300 composti chimici presenti in natura nel regno vegetale. Si presentano come metaboliti secondari soprattutto in generi della famiglia della belladonna e sono derivati dell'. Strutturalmente consistono di uno scheletro steroideo legato a un lattone o uno dei suoi derivati. Contengono un anello epossidico prodotto per ossidazione. Non è noto a quale scopo vengano prodotti i witanolidi; possono agire come deterrente per l'alimentazione di larve di insetti e altri erbivori. (it)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Nicandrenone-1.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Salpichrolide_A.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Withaferin_A.svg
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  • Withanolide sind eine Gruppe von mindestens 300 natürlich vorkommenden chemischen Verbindungen. Chemisch handelt es sich um mit einem Steroidgerüst verbundene Lactone mit 28 Kohlenstoffatomen beziehungsweise deren Lactole oder Seco-Derivate; sie entstehen durch Oxidation von Steroiden. (de)
  • Withanolides are a group of at least 300 naturally occurring steroids built on an ergostane skeleton. They occur as secondary metabolites primarily in genera of the Nightshade family, for example in the tomatillo. Structurally, withanolides consist of a steroid backbone bound to a lactone or one of its derivatives; they are produced via oxidation of steroids. It remains unknown to what end withanolides are produced; they may act as a deterrent for feeding insect larvae and other herbivores. Genera within the nightshade family that produce withanolides include: Datura, Iochroma, Lycium, Nicandra, Physalis, Salpichroa, Solanum, Mandragora, Withania, and Jaborosa. No withanolide has been discovered in Nicotiana to date. (en)
  • Withanolide is een groep van minstens 300 van nature voorkomende chemische verbindingen. Deze secundaire plantaardige stoffen zijn hoofdzakelijk afkomstig van planten van het geslacht nachtschadefamilie. Ze bestaan uit steroïdale lactonverbindingen met 28 koolstofatomen. Er zijn dertien geslachten uit de nachtschadefamilie waarin withanoliden voorkomen, waaronder: Physalis, Tomatillo en Withania. (nl)
  • I witanolidi sono un gruppo di almeno 300 composti chimici presenti in natura nel regno vegetale. Si presentano come metaboliti secondari soprattutto in generi della famiglia della belladonna e sono derivati dell'. Strutturalmente consistono di uno scheletro steroideo legato a un lattone o uno dei suoi derivati. Contengono un anello epossidico prodotto per ossidazione. Non è noto a quale scopo vengano prodotti i witanolidi; possono agire come deterrente per l'alimentazione di larve di insetti e altri erbivori. I generi all'interno della famiglia della belladonna che producono withanolides includono: , Datura, , , , , Physalis, , Solanum, e . (it)
  • Witanolidy – steroidowe laktony występujące w roślinach, odznaczające się dużą aktywnością biologiczną; m.in. działanie cytostatyczne, przeciwbakteryjne, przeciwnowotworowe. Występują np. w korzeniach i częściach zielonych subtropikalnej rośliny Withania somnifera (psiankowate). (pl)
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