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Trisaccharides from Marsdenia roylei.

A Kumar1, A Khare, N K Khare

  • 1Department of Chemistry, Lucknow University, India.

Phytochemistry
|November 26, 1999
PubMed
Summary
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Researchers identified two new trisaccharides, royleose and deniose, from Marsdenia roylei. These rare deoxy sugars were isolated in their free state, marking a significant natural product discovery.

Area of Science:

  • Natural Product Chemistry
  • Carbohydrate Chemistry
  • Phytochemistry

Background:

  • Marsdenia roylei is a plant source with potential for novel compound discovery.
  • Trisaccharides composed of deoxy sugars are rare in nature.

Purpose of the Study:

  • To elucidate the structures of novel trisaccharides from Marsdenia roylei.
  • To report the isolation of rare deoxy sugars in their free state.

Main Methods:

  • Physico-chemical techniques (e.g., NMR, Mass Spectrometry).
  • Chemical transformations for structural confirmation.

Main Results:

  • Two novel trisaccharides, royleose and deniose, were isolated and characterized.
  • Royleose is O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-cymaropyranosyl-(1-->4)-beta-D-oleandropyranose.

Related Experiment Videos

  • Deniose is O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl-(1-->4)-beta-D-oleandropyranose.

    • Conclusions:

    • The structures of royleose and deniose were definitively determined.
    • This study represents the first isolation of trisaccharides of rare deoxy sugars in a free state from a natural source.