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  • Title: Selective transformations of carbonyl functions in the presence of α,β-unsaturated ketones: concise asymmetric total synthesis of decytospolides A and B.
    Author: Yahata K, Minami M, Watanabe K, Fujioka H.
    Journal: Org Lett; 2014 Jul 18; 16(14):3680-3. PubMed ID: 25006698.
    Abstract:
    Enones selectively react with a combination of PPh(3) and TMSOTf to produce phosphonium silyl enol ethers, which work as protective groups of enones during the reduction of other carbonyl functions and can be easily deprotected to regenerate parent enones at workup. Furthermore, the first ketone selective alkylations in the presence of enones were also accomplished. This in situ protection method was applied to concise asymmetric total syntheses of decytospolides A and B.
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