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From Wikipedia, the free encyclopedia

Menthofuran
Menthofuran.svg
Names
IUPAC name
3,6-Dimethyl-4,5,6,7-tetrahydro-1-benzofuran
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.007.087 Edit this at Wikidata
UNII
Properties
C10H14O
Molar mass 150.221 g·mol−1
Boiling point 208
Hazards
Flash point 86
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Menthofuran is an organic compound found in a variety of essential oils including that of pennyroyal (Mentha pulegium). It is highly toxic and believed to be the primary toxin in pennyroyal responsible for its potentially fatal effects.[1] After ingestion of menthofuran, it is metabolically activated to chemically reactive intermediates that are hepatotoxic.[2]

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Transcription

Biosynthesis

Menthofuran is produced biosynthetically from pulegone by the enzyme menthofuran synthase.

Menthofuran synthase converts pulegone to menthofuran
Menthofuran synthase converts pulegone to menthofuran

Synthesis

Menthofuran can be synthesized from 5-methylcyclohexane-1,3-dione and allenyldimethylsulfonium bromide in two steps via a furannulation strategy consisting of enolate addition and rearrangement.[3]

References

  1. ^ Anderson IB, Mullen WH, Meeker JE, Khojasteh-BakhtSC, Oishi S, Nelson SD, Blanc PD (April 1996). "Pennyroyal toxicity: measurement of toxic metabolite levels in two cases and review of the literature". Annals of Internal Medicine. 124 (8): 726–34. doi:10.7326/0003-4819-124-8-199604150-00004. PMID 8633832.
  2. ^ Thomassen D, Knebel N, Slattery JT, McClanahan RH, Nelson SD (1992). "Reactive intermediates in the oxidation of menthofuran by cytochromes P-450". Chemical Research in Toxicology. 5 (1): 123–30. doi:10.1021/tx00025a021. PMID 1581528.
  3. ^ Mariko Aso; Sakamoto, Mizue; Urakawa, Narumi; Kanematsu, Ken (1990). "Furannulation strategy. An efficient synthesis of fused 3-methylfurans". Heterocycles. 31 (6): 1003–6. doi:10.3987/com-90-5392.
This page was last edited on 30 October 2020, at 02:04
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