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Screening and Isolation of C-Glycoside-Cleaving Intestinal Bacteria
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Published on: February 28, 2025

Two new glycosides from Vitex negundo.

Jie Huang1, Guo-Cai Wang, Chun-Hua Wang

  • 1a Department of phytochemistry , China Pharmaceutical University , Nanjing , 210009 , P.R. China.

Natural Product Research
|January 30, 2013
PubMed
Summary

Two novel glycosides and four known iridoid glycosides were identified from the Vitex negundo plant. Their chemical structures were determined using advanced spectroscopic techniques, contributing to natural product chemistry.

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Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Background:

  • Vitex negundo, commonly known as the five-leaved chaste tree, is a medicinal plant with a rich history of traditional use.
  • The chemical constituents of Vitex negundo are of interest for their potential pharmacological activities.
  • Isolation and characterization of novel compounds from medicinal plants can lead to the discovery of new therapeutic agents.

Purpose of the Study:

  • To isolate and characterize novel and known glycosides from the whole plant of Vitex negundo.
  • To elucidate the chemical structures of the isolated compounds using comprehensive spectroscopic analyses.
  • To contribute to the phytochemical knowledge of Vitex negundo.

Main Methods:

  • Extraction of secondary metabolites from the whole plant of Vitex negundo.
  • Chromatographic techniques for the isolation of individual compounds.
  • Structure elucidation using High-Resolution Electrospray Ionization Mass Spectrometry (HR-ESI-MS) and Nuclear Magnetic Resonance (NMR) spectroscopy (1D and 2D).

Main Results:

  • Isolation of two new glycosides: 2-methyl pyromeconic acid 3-O-β-D-glucopyranoside-6'-(O-4″-hydroxybenzoate) and 6'-O-p-hydroxybenzoyl-gardoside.
  • Identification of four known iridoid glycosides.
  • Complete structural determination of all six isolated compounds based on spectroscopic data.

Conclusions:

  • The phytochemical investigation of Vitex negundo led to the discovery of two new glycosides and the confirmation of four known iridoid glycosides.
  • The study successfully elucidated the structures of these compounds using advanced spectroscopic methods.
  • These findings expand the understanding of Vitex negundo's chemical profile and provide valuable data for further research into its medicinal properties.