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A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography (HPLC)

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Stilbene C-glucosides from Cissus repens.

Y-H Wang¹, Z-K Zhang, H-P He

¹State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.

Journal of Asian Natural Products Research

|October 19, 2007

Summary

Four new stilbene C-glucosides were identified in Cissus repens, marking the first discovery of these compounds in the Cissus genus. This research expands our understanding of plant natural products and their chemical diversity.

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Area of Science:

Phytochemistry
Natural Product Chemistry
Plant Sciences

Background:

The genus Cissus is known for its diverse secondary metabolites.
Stilbenes and their glycosides are of interest due to their potential biological activities.
Previous research has not reported stilbene C-glucosides in the Cissus genus.

Purpose of the Study:

To isolate and characterize novel stilbene C-glucosides from Cissus repens.
To investigate the phytochemical profile of Cissus repens, focusing on stilbenoids.
To report the first instance of stilbene C-glucosides within the Cissus genus.

Main Methods:

Extraction of compounds from the aerial parts of Cissus repens.
Isolation of chemical constituents using chromatographic techniques.
Structure elucidation of isolated compounds via spectroscopic methods (e.g., NMR, MS).

Main Results:

Four new stilbene C-glucosides were isolated and identified: trans-3-O-methyl-resveratrol-2-C-beta-glucoside (1), cis-3-O-methyl-resveratrol-2-C-beta-glucoside (2), cissuside A (3), and cissuside B (4).
Three known compounds, trans-resveratrol (5), trans-resveratrol-2-C-beta-glucoside (6), and cis-resveratrol-2-C-beta-glucoside (7), were also identified.
The structures of all compounds were confirmed through comprehensive spectroscopic analysis.

Conclusions:

This study represents the first report of stilbene C-glucosides in the genus Cissus.
The findings contribute to the chemotaxonomic understanding of the Cissus genus.
The isolation of these novel compounds opens avenues for further investigation into their biological properties.