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Absolute configuration of amphidinin A
Takahiro Iwai1, Takaaki Kubota, Jun'ichi Kobayashi
1Graduate School of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812, Japan.
Journal of Natural Products
|May 20, 2014
Summary
Researchers determined the precise 3D structure of amphidinin A, a cytotoxic compound from marine algae. This discovery aids in understanding its potential as a marine natural product drug candidate.
Area of Science:
- Marine natural products chemistry
- Organic chemistry
- Chemical biology
Background:
- Amphidinin A is a cytotoxic linear polyketide.
- It is isolated from a symbiotic marine dinoflagellate, Amphidinium sp.
- Elucidating the absolute configurations of complex natural products is crucial for understanding their biological activity and for synthetic efforts.
Purpose of the Study:
- To determine the absolute configurations of the six stereogenic centers in amphidinin A.
- To contribute to the structural understanding of marine-derived polyketides.
Main Methods:
- J-based configuration analysis
- Modified Mosher's method
- Density-functional theory (DFT) calculations
Main Results:
- The absolute configurations of amphidinin A were determined to be 2R, 4R, 6S, 9R, 11R, and 12S.
- The combination of spectroscopic and computational methods provided unambiguous stereochemical assignment.
Conclusions:
- The complete stereochemistry of amphidinin A has been established.
- This detailed structural information is vital for future structure-activity relationship studies and the development of amphidinin A as a potential therapeutic agent.
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