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Lactam Framework Editing via Formal Methylene Deletion.

Nicholas D D'Arcy-Evans1, Gabriele Rossini1, Benjamin D A Shennan1

  • 1Department of Chemistry, University of Oxford, Oxford, OX1 3TA, United Kingdom.

Journal of the American Chemical Society
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Summary
This summary is machine-generated.

Researchers developed a new method to shrink lactam rings by removing methylene units. This simplifies synthesizing smaller lactams and beta-amino acid derivatives for drug discovery.

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Area of Science:

  • Organic Chemistry
  • Medicinal Chemistry
  • Synthetic Chemistry

Background:

  • Lactams are crucial cyclic amides in synthetic chemistry and drug discovery.
  • Current methods for altering lactam ring sizes are limited and inconvenient.

Purpose of the Study:

  • To introduce a general and efficient strategy for lactam dehomologation.
  • To streamline the synthesis of medium-to-small-sized lactams.

Main Methods:

  • A one-pot, two-step sequence involving amide α-oxidation and oxidative decarboxylation.
  • Utilized oxoammonium salts for oxidation and meta-chloroperoxybenzoic acid (m-CPBA) for decarboxylation.

Main Results:

  • Demonstrated successful dehomologation of various lactams, enabling ring size reduction.
  • Applied the method to biologically relevant, drug-like molecules.
  • Extended the approach to synthesize diverse β-amino acid derivatives.

Conclusions:

  • The developed strategy offers a convenient route to smaller lactams and related compounds.
  • This method enhances access to valuable building blocks for medicinal chemistry.
  • Facilitates ring size scanning and derivative preparation in drug discovery programs.