A Unified Strategy for the Enantiospecific Total Synthesis of Delavatine A and Formal Synthesis of Incarviatone A

J Am Chem Soc. 2019 Sep 11;141(36):14421-14432. doi: 10.1021/jacs.9b07693. Epub 2019 Sep 3.

Abstract

We describe a symmetry-inspired synthetic approach that has enabled a short synthesis of delavatine A and a formal synthesis of incarviatone A, which are two likely biosynthetically related natural products. The indane core of these natural products was constructed through a cascade sequence involving five transformations that occur in a single pot. Leveraging symmetry has allowed us to trace both natural products back to a versatile building block, 3,5-dibromo-2-pyrone, and studies related to site-selective cross-coupling of this polyhalogenated heterocycle are described. In addition, our strategy gave access to a putative biogenetic precursor, from which the syntheses of both natural products were attempted.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biological Products / chemical synthesis*
  • Biological Products / chemistry
  • Heterocyclic Compounds, 4 or More Rings / chemical synthesis*
  • Heterocyclic Compounds, 4 or More Rings / chemistry
  • Isoquinolines / chemical synthesis*
  • Isoquinolines / chemistry
  • Molecular Conformation
  • Stereoisomerism

Substances

  • Biological Products
  • Heterocyclic Compounds, 4 or More Rings
  • Isoquinolines
  • delavatine A
  • incarviatone A