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Related Experiment Videos

Two oligosaccharides from Marsdenia roylei.

A Kumar1, A Khare, N K Khare

  • 1Department of Chemistry, Lucknow University, India.

Phytochemistry
|May 18, 1999
PubMed
Summary
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Phytochemical analysis of Marsdenia roylei yielded two novel glycosides: maryal, a trisaccharide, and rolinose, a diglycoside. Their structures were elucidated using chemical and spectroscopic techniques.

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Background:

  • Marsdenia roylei, a plant from the Asclepiadaceae family, is a source of bioactive compounds.
  • Glycosides are important natural products with diverse biological activities.

Purpose of the Study:

  • To isolate and characterize novel glycosides from the dried twigs of Marsdenia roylei.
  • To determine the chemical structures of the isolated compounds.

Main Methods:

  • Phytochemical analysis of plant extracts.
  • Chemical degradation studies.
  • Spectroscopic methods (e.g., NMR, Mass Spectrometry) for structure elucidation.

Main Results:

  • Isolation of a trisaccharide named maryal.

Related Experiment Videos

  • Isolation of a diglycoside named rolinose.
  • Determination of maryal as O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl-(1-->4)-D-cymaral.
  • Determination of rolinose as ethyl O-beta-D-oleandropyranosyl-(1-->4)-O-3-O-methyl-6-deoxy-beta-D-allopyranoside.

    • Conclusions:

    • The study successfully identified and characterized two new glycosides from Marsdenia roylei.
    • The structural elucidation provides valuable data for understanding the phytochemistry of this species.