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Cytotoxic flavonoids from Vitex agnus-castus
1Department of Natural Medicines, Tokyo University of Pharmacy & Life Science, Japan.
Phytochemistry
|October 23, 1997
Summary
Researchers identified eight flavonoids, including four novel compounds, from Vitex agnus-castus root bark. These compounds were structurally characterized using spectroscopic methods for potential therapeutic applications.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
- Pharmacognosy
Background:
- Vitex agnus-castus (chaste tree) is a medicinal plant with a long history of use.
- The root bark is a rich source of bioactive compounds, including flavonoids.
Purpose of the Study:
- To isolate and characterize novel and known flavonoids from the root bark of Vitex agnus-castus.
- To elucidate the chemical structures of these isolated compounds.
Main Methods:
- Phytochemical investigation involving extraction and isolation techniques.
- Spectroscopic methods, including NMR and Mass Spectrometry, for structure elucidation.
Main Results:
- Four new flavonoids were isolated: luteolin 6-C-(4"-methyl-6"-O-trans-caffeoylglucoside), luteolin 6-C-(6"-O-trans-caffeoylglucoside), luteolin 6-C-(2"-O-trans-caffeoylglucoside), and luteolin 7-O-(6"-p-benzoylglucoside).
- Four known flavonoids were also identified: 5,4'-dihydroxy-3,6,7,3'-tetramethoxyflavone, luteolin, artemetin, and isorhamnetin.
- The structures of all isolated compounds were confirmed through comprehensive spectroscopic analysis.
Conclusions:
- The study successfully identified a diverse range of flavonoids from Vitex agnus-castus root bark.
- The characterization of these compounds provides a basis for further research into their pharmacological activities and potential applications.