Two new thymol derivatives from Eupatorium fortunei

Area of Science:

• Phytochemistry
• Natural Products Chemistry
• Pharmacology

Background:

• Eupatorium fortunei is a plant known for its traditional medicinal uses.
• Thymol derivatives are a class of compounds with diverse biological activities.
• Isolation of new compounds from natural sources is crucial for drug discovery.

Purpose of the Study:

• To isolate and characterize new thymol derivatives from Eupatorium fortunei.
• To evaluate the cytotoxic activities of the isolated compounds against human cancer cell lines.

Main Methods:

• Aerial parts of Eupatorium fortunei were extracted and fractionated.
• Compound structures were elucidated using comprehensive spectroscopic data analysis (NMR, MS).
• In vitro cytotoxic activity was assessed using MTT assays against MCF-7, HeLa, A549, and Hep G-2 cells.

Main Results:

• Two new thymol derivatives, 8,9-dehydrothymol-3-O-β-glucoside (1) and 9-(acetyloxy)thymol-3-yl (3-methylbut-2-enoate) (2), were isolated and identified.
• Both compounds exhibited weak cytotoxic effects, with IC50 values > 50 μM against all tested cancer cell lines.
• No significant correlation was observed between the structures of the new derivatives and potent cytotoxic activity.

Conclusions:

• The study successfully isolated and characterized two novel thymol derivatives from Eupatorium fortunei.
• The identified compounds demonstrated limited in vitro cytotoxic potential against the evaluated cancer cell lines.
• Further structural modifications or investigation of other biological activities may be warranted for these derivatives.