First Total Synthesis, Structure Revision, and Natural History of the Smallest Cytochalasin: (+)-Periconiasin G
| Autor: | Florent Blanchard, Bastien Nay, Mehdi Zaghouani, Laura Guedon, Caroline Kunz |
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| Rok vydání: | 2016 |
| Předmět: |
Natural product
Magnetic Resonance Spectroscopy biology Cycloaddition Reaction Molecular Structure 010405 organic chemistry Stereochemistry fungi Organic Chemistry Total synthesis General Chemistry 010402 general chemistry Ring (chemistry) biology.organism_classification 01 natural sciences Cytochalasins Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Intramolecular force Citronellal Cytochalasin Enantiomer Botrytis cinerea |
| Zdroj: | Chemistry (Weinheim an der Bergstrasse, Germany). 22(43) |
| ISSN: | 1521-3765 |
| Popis: | The total synthesis of the smallest cytochalasin isolated so far, periconiasin G, which bears a seven-membered ring in lieu of the usual macrocycle, has been performed from both enantiomers of citronellal, relying on an intramolecular Diels-Alder reaction in favor of the natural endo stereochemistry. We show that, among the four synthesized stereoisomers, including the exo isomers, the one matching the NMR data of the natural product was not that assigned in the original report, imposing structure revision. The natural product, previously isolated from a plant-mutualistic fungus, was biologically investigated taking into account its natural history, showing significant effects against the phytopathogenic fungus Botrytis cinerea and thus opening new opportunities in combating this pest. |
| Databáze: | OpenAIRE |
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