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Related Experiment Videos

Cyanogenesis in Passifloraceae.

F C Fischer1, S Y Fung, P P Lankhorst

  • 1Department of Pharmacognosy, State University of Leiden, Gorlaeus Laboratories, Leiden, The Netherlands.

Planta Medica
|May 1, 1982
PubMed
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A new cyanogenic bis-glycoside, passicapsin, was identified in Passiflora capsularis. This discovery expands the known chemistry of cyanogenic glycosides in the Passiflora genus.

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Glycoside Chemistry

Background:

  • The Passiflora genus is known for containing various secondary metabolites, including cyanogenic glycosides.
  • Cyanogenic glycosides are plant compounds that can release hydrogen cyanide upon hydrolysis.
  • Understanding the diversity of these compounds is crucial for chemotaxonomy and potential applications.

Purpose of the Study:

  • To isolate and characterize novel cyanogenic glycosides from Passiflora species.
  • To elucidate the chemical structure of a newly discovered compound from Passiflora capsularis.
  • To investigate the presence of known cyanogenic glycosides in other Passiflora species.

Main Methods:

  • Isolation of compounds using chromatographic techniques.

Related Experiment Videos

  • Structure elucidation through spectroscopic methods (e.g., NMR, MS).
  • Comparative analysis of phytochemical profiles across different Passiflora species.

    • Main Results:

    • A novel cyclopentenoid cyanogenic bis-glycoside, tentatively identified as 4-boivinosyl tetraphyllin B and named passicapsin, was isolated from Passiflora capsularis.
    • Linamarin was identified in Passiflora warmingii.
    • A cyclopentenone derivative, likely from an unstable glycoside, was found in Passiflora perfoliata.

    Conclusions:

    • Passiflora capsularis harbors a unique cyanogenic bis-glycoside, passicapsin.
    • The study highlights the chemical diversity of cyanogenic glycosides within the Passiflora genus.
    • Further research is warranted to explore the biosynthesis and biological activities of these compounds.