Phytochemical investigation on Atriplex halimus L. from Sardinia

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Medicinal Botany

Background:

• Atriplex halimus L. is a halophytic shrub native to the Mediterranean Basin.
• Understanding the phytochemical profile of A. halimus contributes to ethnobotanical and pharmacological research.

Purpose of the Study:

• To isolate and characterize novel compounds from the aerial parts of Atriplex halimus L.
• To elucidate the structures of new glycosylated flavonoids using spectroscopic methods.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation via 1D, 2D NMR (Nuclear Magnetic Resonance) and MS (Mass Spectrometry) analyses.
• LC-MS(n) (Liquid Chromatography-tandem Mass Spectrometry) analysis of the crude extract.

Main Results:

• Four new glycosylated flavonoids were successfully isolated and identified.
• Structures determined include novel derivatives of myricetin and quercetin with complex glycosidic linkages.
• LC-MS(n) analysis confirmed the presence of additional myricetin, quercetin, and isorhamnetin glycosides, phenolic acids, and esters.

Conclusions:

• The phytochemical investigation of Atriplex halimus L. yielded four previously undescribed glycosylated flavonoids.
• The findings enhance the understanding of the chemical diversity within the Atriplex genus.
• This research provides a basis for further studies on the potential bioactivity of these compounds.