Total Synthesis of (−)-Phorbaketal A
Organic letters(2017)
摘要
A convergent asymmetric total synthesis of phorbaketal A was achieved in 10 steps through a Au(I)-catalyzed intramolecular spiroketalization reaction of an alkyne diol intermediate prepared from (R)-carvone and geranial. The spiroketalization reaction was regio- and stereoselective and was accompanied by isomerization of an exo-olefin into the trisubstituted olefin to form a unique spiroketal structure of phorbaketals.
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