1. Total Synthesis of Dysidiolide
- Author
-
Bryan E. Roberts and E. J. Corey and
- Subjects
chemistry.chemical_classification ,Natural product ,Bicyclic molecule ,Stereochemistry ,Iodide ,Cationic polymerization ,Total synthesis ,General Chemistry ,Biochemistry ,Catalysis ,chemistry.chemical_compound ,Colloid and Surface Chemistry ,chemistry ,Dysidiolide ,Side chain ,Enone - Abstract
The cdc25A protein phosphatase inhibitor dysidiolide (1) has been synthesized enantioselectively, starting from the enantiomerically pure ketal enone 2 and using a cationic rearrangement as the key step to produce the fully substituted bicyclic core of the natural product. Once the central portion of 1 was established, elaboration of the side chains was accomplished expediently via steps that included (1) vinyl cuprate displacement of an iodide to complete the C-1 side chain, (2) a highly diastereoselective oxazaborolidine-catalyzed (CBS) reduction to form carbinol 11, and (3) photochemical oxidation of 11 to generate the γ-hydroxybutenolide functionality of 1. Additionally, this synthesis proves the absolute stereochemistry of dysidiolide (1).
- Published
- 1997
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