Cycloartane and oleanane-type glycosides from Astragalus pennatulus.

Area of Science:

• Natural Product Chemistry
• Phytochemistry
• Medicinal Chemistry

Background:

• Astragalus species are known sources of bioactive compounds.
• Cycloartane and oleanane-type glycosides have demonstrated diverse pharmacological activities.
• Investigating novel compounds from medicinal plants is crucial for drug discovery.

Purpose of the Study:

• To isolate and characterize new glycosides from Astragalus pennatulus.
• To evaluate the cytotoxic potential of these isolated compounds against human cancer cell lines.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation through 1D and 2D-NMR, ESIMS, and HRMS analyses.
• Cytotoxicity assays against A549, A375, and DeFew cancer cell lines.

Main Results:

• Five new glycosides (four cycloartane, one oleanane) were identified and structurally characterized.
• The aglycone of compound 1 is reported for the first time.
• None of the isolated compounds exhibited significant cytotoxic activity against the tested cancer cell lines.

Conclusions:

• Astragalus pennatulus yielded novel cycloartane and oleanane-type glycosides.
• The isolated compounds did not demonstrate cytotoxic effects on A549, A375, or DeFew cells.
• Further research may explore other potential biological activities of these compounds.