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EntityQ387505· pop 14· linked from 163 articles

Also known as 6alpha,8beta-dihydroxy-4-oxoambrosa-2,11(13)-dien-12-oic acid 12,8-lactone, Helenalin A, (3aS)-3,3aalpha,4alpha,4a,7aalpha,8,9,9aalpha-octahydro-4-hydroxy-4abeta,8alpha-dimethyl-3-methyleneazuleno(6,5-b)-furan-2,5-dione

Helenalin, or (-)-4-Hydroxy-4a,8-dimethyl-3,3a,4a,7a,8,9,9a-octahydroazuleno[6,5-b]furan-2,5-dione, is a toxic sesquiterpene lactone which can be found in several plants such as Arnica montana and Arnica chamissonis Helenalin is responsible for the toxicity of the Arnica spp. Although toxic, helenalin possesses some in vitro anti-inflammatory and anti-neoplastic effects. Helenalin can inhibit certain enzymes, such as 5-lipoxygenase and leukotriene C4 synthase. For this reason the compound or its derivatives may have potential medical applications.

Wikidata facts

Mass
262.121
Show 6 more facts
chemical formula
C₁₅H₁₈O₄
isomeric SMILES
C[C@@H]1C[C@@H]2[C@H]([C@@H]([C@]3([C@H]1C=CC3=O)C)O)C(=C)C(=O)O2
canonical SMILES
CC1CC2C(C(C3(C1C=CC3=O)C)O)C(=C)C(=O)O2
has characteristic
bitterness
Commons category
Helenalin
Sources (2)

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Encyclopedic overview

9 sections
Contents
  • Structure and reactivity
  • Chemical derivatives
  • Some biochemical effects of helenalin
  • Metabolism
  • ''In vitro'' anti-inflammatory and anti-neoplastic effects
  • Application
  • Toxicity
  • Pharmacology
  • References

Helenalin, or (-)-4-Hydroxy-4a,8-dimethyl-3,3a,4a,7a,8,9,9a-octahydroazuleno[6,5-b]furan-2,5-dione, is a toxic sesquiterpene lactone which can be found in several plants such as Arnica montana and Arnica chamissonis Helenalin is responsible for the toxicity of the Arnica spp. Although toxic, helenalin possesses some in vitro anti-inflammatory and anti-neoplastic effects. Helenalin can inhibit certain enzymes, such as 5-lipoxygenase and leukotriene C4 synthase. For this reason the compound or its derivatives may have potential medical applications.

== Structure and reactivity ==

Excerpted from Wikipedia’s “helenalin” article, available under the CC BY-SA 4.0 licence.