Highly stereoselective oxy-michael additions to beta,gamma-unsaturated alpha-keto esters: rapid enantioselective synthesis of 3-hydroxybutenolides.
The highly diastereoselective oxy-Michael addition of the "naked" anion of (6S)-methyl delta-lactol to gamma-substituted beta,gamma-unsaturated alpha-keto esters leading to the direct formation of THP*-protected gamma-hydroxy alpha-keto ester derivatives is described. Subsequent acid-media...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2008
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