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Bioactive humulene derivatives from Asteriscus vogelii.
A P Rauter1, I Branco, J Bermejo
1Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Portugal. aprauter@mail.telepac.pt
Phytochemistry
|February 24, 2001
Summary
Bioactive compounds from Asteriscus vogelii were isolated, including a new humulene derivative. Certain compounds (3 and 4) showed significant phytotoxic and cytotoxic activities, with compound 4 demonstrating potent anti-cancer effects.
Area of Science:
- Natural Product Chemistry
- Pharmacology
- Phytochemistry
Background:
- Asteriscus vogelii is a plant species known for its potential medicinal properties.
- Natural products often serve as a source of novel therapeutic agents.
Purpose of the Study:
- To isolate and characterize bioactive compounds from Asteriscus vogelii.
- To evaluate the phytotoxic and cytotoxic activities of these isolated compounds.
Main Methods:
- Extraction and isolation of compounds from Asteriscus vogelii.
- Structural elucidation of isolated compounds using spectroscopic methods.
- In vitro evaluation of phytotoxic activity against plant cell cultures and Lemna paucicostata.
- In vitro evaluation of cytotoxic activity against various cancer cell lines (P-338, A-549, HT-29, MEL-28).
Main Results:
- A new humulene derivative, 8-oxo-6,7,9,10-tetrahydrohumulen-1,12-olide, was identified.
- Known compounds, including asteriscunolides A, C, D, and related acids, were also isolated.
- Compounds 3 and 4 exhibited significant phytotoxic effects, inhibiting plant cell cultures and Lemna paucicostata.
- Compound 4 displayed potent cytotoxic activity against P-338 lymphoma, A-549 lung carcinoma, HT-29 colon carcinoma, and MEL-28 melanoma cells.
Conclusions:
- Asteriscus vogelii is a source of bioactive humulene derivatives with significant phytotoxic and cytotoxic properties.
- Compound 4 shows promise as a potential anti-cancer agent warranting further investigation.