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Flavonol glycosides from Nitraria retusa
A F Halim1, H E Saad, N E Hashish
1Department of Pharmacognosy, Faculty of Pharmacy, University of Mansoura, Egypt.
Phytochemistry
|September 1, 1995
Summary
Researchers identified a new flavonol trioside and known glycosides from Nitraria retusa. These compounds, including isorhamnetin derivatives, were isolated and characterized using spectroscopic methods.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
- Plant Sciences
Background:
- Nitrarieae tribe plants are known sources of bioactive compounds.
- Flavonoids and their glycosides possess diverse pharmacological properties.
- Nitrarie retusa's chemical constituents are not fully elucidated.
Purpose of the Study:
- To isolate and characterize novel and known secondary metabolites from Nitraria retusa.
- To investigate the phytochemical profile of the leaves and young stems of Nitraria retusa.
Main Methods:
- Extraction of compounds from plant material (leaves and young stems).
- Isolation and purification of secondary metabolites.
- Characterization using UV and Nuclear Magnetic Resonance (NMR) spectroscopy.
Main Results:
- A new flavonol trioside, isorhamnetin 3-O-4Rham-galactosylrobinobioside, was isolated.
- Five known flavonol glycosides (isorhamnetin 3-robinobioside, 3-rutinoside, 3-galactoside, 3-glucoside) and free isorhamnetin were identified.
- Isorhamnetin 3-xylosylrobinobioside was tentatively identified.
Conclusions:
- The phytochemical analysis of Nitraria retusa yielded a new flavonol trioside and several known isorhamnetin derivatives.
- Spectroscopic data confirmed the structures of the isolated compounds.
- This study expands the knowledge of secondary metabolites in the Nitrarieae tribe.