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Related Experiment Videos

Two new limonoids from Munronia henryi.

Hua-Ping Zhang1, Guan-Hu Bao, Hong-Bing Wang

  • 1Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 201203, PR China.

Natural Product Research
|July 14, 2004
PubMed
Summary

Two novel limonoids, munronolide and its glucoside, were identified from Munronia henryi. A D-glucose unit attached to the C-21 position of a limonoid is reported for the first time.

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Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Organic Chemistry

Background:

  • Munronia henryi, a plant from the Meliaceae family, is a potential source of bioactive compounds.
  • Limonoids are a class of terpenoids found in Meliaceae plants, known for diverse biological activities.

Purpose of the Study:

  • To isolate and characterize new limonoids from Munronia henryi.
  • To investigate the structural features of isolated compounds, particularly glycosidic linkages.

Main Methods:

  • Extraction of compounds from the whole plant of Munronia henryi.
  • Structure elucidation using spectroscopic methods (NMR, MS) and chemical analysis.
  • Identification of a novel glycosidic linkage in a limonoid.

Main Results:

Related Experiment Videos

  • Isolation of two new limonoids: munronolide (1) and munronolide 21-O-beta-D-glucopyranoside (2).
  • Confirmation of the structures through comprehensive spectroscopic and chemical analyses.
  • Discovery of a D-glucose moiety attached to the C-21 position of a limonoid, a previously unreported feature.

Conclusions:

  • Munronia henryi harbors novel limonoid structures with unique glycosylation patterns.
  • The identification of munronolide 21-O-beta-D-glucopyranoside expands the known structural diversity of limonoids.
  • This finding contributes to the understanding of natural product biosynthesis and chemical diversity in Meliaceae.