Two new phenolic glycosides from Inula cappa DC

Area of Science:

• Natural Product Chemistry
• Phytochemistry
• Organic Chemistry

Background:

• The Inula genus is known for its diverse bioactive compounds.
• Inula cappa roots are a potential source of novel phytochemicals.
• Phenolic glycosides exhibit a range of biological activities.

Purpose of the Study:

• To isolate and characterize new phenolic glycosides from Inula cappa roots.
• To elucidate the chemical structures of the isolated compounds.
• To contribute to the understanding of Inula cappa's chemical constituents.

Main Methods:

• Ethanol extraction of Inula cappa roots.
• Isolation of compounds using chromatographic techniques.
• Structure elucidation via comprehensive spectral analysis (NMR, MS, etc.).

Main Results:

• Two new phenolic glycosides were successfully isolated.
• Compound 1 identified as 4-[(6-O-(E)-caffeoyl)-β-D-glucopyranosyl]vanillic acid.
• Compound 2 identified as 3-O-[β-D-apiofurarnosyl-(1-6)-β-D-glucopyranoxy]-6-hydroxy-p-cymene.

Conclusions:

• The study successfully identified and characterized two novel phenolic glycosides from Inula cappa.
• The findings expand the knowledge of secondary metabolites in the Inula genus.
• These compounds represent potential leads for further pharmacological investigations.