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Keywords:

  • asymmetric synthesis;
  • natural products;
  • photochemistry;
  • rearrangement;
  • total synthesis
Thumbnail image of graphical abstract

Enantioselective synthesis in a new light: The template-controlled [2+2] photocycloaddition leading to product 1 is the first example of this type of reaction in natural product synthesis. In addition, a retro-benzilic acid rearrangement (→2), a Claisen rearrangement (→3), and a ring-closing metathesis played decisive roles in the synthesis of the alkaloid (+)-meloscine (4).