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Keywords:

  • cycloaddition;
  • cyclopropane;
  • Lewis acids;
  • natural products;
  • synthetic methodology
Thumbnail image of graphical abstract

Carbon bridges: The title reaction has been successfully developed, and applied to the total synthesis of the tetracyclic diterpenoids phyllocladanol and phyllocladene. The method provides an efficient, general, and conceptually new strategy for the construction of structurally complex and diverse [n.2.1] carbocyclic skeletons (see scheme).