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Related Experiment Videos

Naturally occurring cyclohexene epoxides revisited.

C Mahidol1

  • 1Chulabhorn Research Institute, Bangkok, Thailand.

Ciba Foundation Symposium
|January 1, 1990
PubMed
Summary

Novel cyclohexene epoxides found in Uvaria plants challenge existing biosynthetic pathways. An alternative pathway now better explains the origin of these pharmacologically active natural products.

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Area of Science:

  • Natural Product Chemistry
  • Plant Biochemistry
  • Pharmacognosy

Background:

  • Cyclohexene epoxides are oxygenated cyclohexanes predominantly found in Uvaria plants.
  • These compounds exhibit pharmacological activity and are utilized in traditional Thai medicine.
  • Previous understanding of their biogenesis was based on a proposed pathway with isolated intermediates.

Purpose of the Study:

  • To investigate the biosynthesis of cyclohexene epoxides.
  • To identify novel compounds that do not fit the established biosynthetic scheme.
  • To propose an alternative pathway for cyclohexene epoxide formation.

Main Methods:

  • Isolation and characterization of naturally occurring cyclohexene epoxides from Uvaria species.
  • Analysis of biosynthetic pathways through the identification of intermediates.
  • Comparison of novel compound structures with proposed biosynthetic schemes.

Main Results:

  • Discovery of novel cyclohexene epoxide compounds.
  • Identification of compounds inconsistent with the previously accepted biosynthetic pathway.
  • Evidence supporting an alternative biosynthetic route.

Conclusions:

  • The established biosynthetic pathway for cyclohexene epoxides is incomplete.
  • An alternative pathway is proposed to account for newly discovered compounds.
  • Further research is needed to fully elucidate the biogenesis of these natural products.

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