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A new bioactive metabolite from Xanthoria steineri
1Pharmacognosy Department, Faculty of Pharmacy, Mansoura University, Egypt.
Bollettino Chimico Farmaceutico
|March 1, 1997
Summary
Researchers discovered two new octanoic acid derivatives, xantoric acid A and B, from the lichen Xanthoria steneri. Xanthoric acid B exhibits significant biological activities, including cytotoxicity and antimicrobial properties.
Area of Science:
- Natural Product Chemistry
- Lichenology
- Pharmacognosy
Background:
- Lichens are a rich source of unique secondary metabolites.
- Xanthoria steneri Lamb is a lichen species with potential for novel compound discovery.
Purpose of the Study:
- To isolate and characterize new chemical compounds from the ether extract of Xanthoria steneri.
- To evaluate the biological activities of the isolated compounds, particularly xanthoric acid B.
Main Methods:
- Extraction of lichen material using ether.
- Isolation and purification of compounds using chromatographic techniques.
- Structure elucidation using spectral data (e.g., NMR, MS).
- Biological activity screening (cytotoxicity, anticonvulsant, antibacterial, antimycotic assays).
Main Results:
- Two novel octanoic acid derivatives, xantoric acid A and xanthoric acid B, were identified.
- Other compounds isolated include 3-methyl orsellinic acid methyl ester, physcion, and 5 alpha-stigmast-7-en-3 beta-OI.
- Xanthoric acid B demonstrated broad bioactivity, including cytotoxic, anticonvulsant, antibacterial, and antimycotic effects.
Conclusions:
- The study successfully identified new bioactive compounds from Xanthoria steneri.
- Xanthoric acid B is a promising candidate for further pharmacological investigation due to its diverse biological profile.