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Flavone glucosides from Artemisia juncea.

Bakhodir S Okhundedaev1, Markus Bacher2, Rimma F Mukhamatkhanova1

  • 1a Institute of the Chemistry of Plant Substances of the Academy Sciences of Uzbekistan , Tashkent , Uzbekistan.

Natural Product Research
|November 14, 2018
PubMed
Summary

A new flavone glucoside was isolated from Artemisia juncea, alongside eupatilin. The plant extracts demonstrated significant antioxidant, tyrosinase inhibition, and antidiabetic activities, highlighting their therapeutic potential.

Keywords:
4′,5-dihydroxy-3′,5′,6-trimethoxyflavone-7-O-β-D-glucosideArtemisia junceaantioxidantenzyme inhibitoreupatilinflavonesflavonoid

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Pharmacology

Background:

  • Artemisia juncea is a plant species with potential medicinal properties.
  • Flavonoids are a class of plant compounds known for their diverse biological activities.

Purpose of the Study:

  • To isolate and characterize chemical constituents from the aerial parts of Artemisia juncea.
  • To evaluate the antioxidant, tyrosinase inhibitory, and antidiabetic effects of the plant extracts and isolated compounds.

Main Methods:

  • Isolation and purification of compounds using chromatographic techniques.
  • Structural elucidation using spectroscopic methods (IR, UV, NMR, HR-MS).
  • In vitro assays for antioxidant capacity (DPPH, CUPRAC, FRAP), phosphomolybdenum activity, tyrosinase inhibition, and antidiabetic effects.

Main Results:

  • A new flavone glucoside (4',5-dihydroxy-3',5',6-trimethoxyflavone-7-O-β-D-glucoside) and eupatilin were identified.
  • The ethyl acetate (EtOAc) fraction exhibited potent DPPH radical scavenging, reducing power, and phosphomolybdenum activity.
  • The EtOAc fraction also showed strong tyrosinase inhibitory effects, while eupatilin and the chloroform (CHCl3) fraction displayed the best antidiabetic effects.

Conclusions:

  • Artemisia juncea is a source of bioactive flavonoids with significant antioxidant and enzyme inhibitory properties.
  • The isolated compounds and plant fractions hold promise for therapeutic applications, particularly in managing oxidative stress and diabetes.