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Stereoselective synthesis of (-)-amphidinolide E
Chan Hyuk Kim1, Hyo Jung An, Won Kyo Shin
1Department of Chemistry, Seoul National University, Seoul 151-747, Korea.
The total synthesis of (-)-amphidinolide E was successfully achieved, incorporating a challenging stereocenter late in the process. Key reactions included radical cyclization, enyne metathesis, Kocienski-Julia coupling, and macrolactonization.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
- Natural Product Synthesis
Background:
- (-)-Amphidinolide E is a complex marine macrolide with potential biological activity.
- Developing efficient synthetic routes to complex natural products is crucial for further study and analog development.
Purpose of the Study:
- To achieve the first total synthesis of (-)-amphidinolide E.
- To showcase a novel synthetic strategy incorporating a late-stage stereocenter installation.
Main Methods:
- Beta-alkoxyacrylate radical cyclization for oxolane core construction.
- Enyne metathesis for efficient side-chain assembly.
- Kocienski-Julia reaction for fragment coupling and Kita macrolactonization for macrocycle formation.
Main Results:
- Successful total synthesis of (-)-amphidinolide E.
- Demonstration of a late-stage incorporation of the labile C2 stereocenter.
- Validation of key synthetic methodologies for complex macrolide construction.
Conclusions:
- The developed synthetic strategy is effective for accessing (-)-amphidinolide E.
- The late-stage stereocenter control offers flexibility in synthesizing analogs.
- This synthesis provides a platform for exploring the biological properties of amphidinolide E.
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