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A prenyloxycoumarin from Psiadia dentata
H Fortin1, S Tomasi, P Jaccard
1UPRES Synthèse et Extraction de Molécules à Visée Thérapeutique Faculté de Pharmacie, Rennes, France.
Chemical & Pharmaceutical Bulletin
|June 1, 2001
Summary
A novel coumarin, isoobtusitin, isolated from Psiadia dentata, demonstrated moderate in vitro poliovirus inhibition. It exhibited weak activity against human immunodeficiency virus (HIV) but was inactive against other viruses and cancer cell lines.
Area of Science:
- Natural Product Chemistry
- Virology
- Pharmacology
Background:
- Psiadia dentata is a plant species known for potential bioactive compounds.
- Coumarins are a diverse class of natural products with various pharmacological activities.
- Viral infections and cancer remain significant global health challenges.
Purpose of the Study:
- To isolate and identify new coumarin compounds from Psiadia dentata.
- To evaluate the in vitro antiviral and antitumor activities of the isolated compound.
- To characterize the biological profile of isoobtusitin.
Main Methods:
- Phytochemical analysis and isolation techniques were employed to obtain the compound.
- In vitro assays were performed to assess antiviral activity against poliovirus, human immunodeficiency virus (HIV), herpes simplex virus type 1 (HSV1), and vesicular stomatitis virus (VSV).
- Cytotoxicity assays were conducted against murine tumoral cell lines (3LL and L1210).
Main Results:
- A new coumarin, isoobtusitin (5-hydroxy-6-methoxy-7-(3-methyl-but-2-enyloxy)-2H-1-benzopyran-2-one), was successfully isolated.
- Isoobtusitin displayed moderate in vitro inhibitory activity against poliovirus.
- The compound showed very weak activity against HIV and was inactive against HSV1, VSV, and the tested murine tumoral cell lines.
Conclusions:
- Isoobtusitin is a novel coumarin with selective antiviral properties.
- The findings suggest potential for isoobtusitin as a lead compound for poliovirus therapeutic development.
- Further research is warranted to explore the mechanism of action and optimize the activity of isoobtusitin.