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Potential anticancer agents, XI. X-ray structure determination of acantholide.
Zeitschrift Fur Naturforschung. Section C, Biosciences
|September 1, 1979
Summary
The X-ray structure of acantholide, a sesquiterpene lactone, was determined. This compound showed cytotoxicity but lacked antitumor effects, with solid-state and solution conformations being identical.
Area of Science:
- Natural Product Chemistry
- Structural Biology
- Medicinal Chemistry
Background:
- Acantholide is a melampolide sesquiterpene lactone isolated from Acanthospermum glabratum.
- Sesquiterpene lactones are known for diverse biological activities.
Purpose of the Study:
- To determine the X-ray structure of acantholide.
- To evaluate the cytotoxic and antitumor activities of acantholide.
- To compare the solid-state and solution conformations of acantholide.
Main Methods:
- X-ray crystallography using direct methods for structure determination.
- Cytotoxicity assays.
- Nuclear Magnetic Resonance (NMR) spectroscopy for conformational analysis.
Main Results:
- The precise X-ray structure of acantholide was elucidated.
- Acantholide exhibited significant cytotoxicity.
- No significant antitumor activity was observed for acantholide.
- X-ray and NMR data confirmed identical conformations in solid and solution states.
Conclusions:
- The determined structure provides a basis for understanding acantholide's properties.
- Acantholide's cytotoxicity warrants further investigation for potential applications.
- The conformational stability suggests a consistent molecular behavior in different environments.