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Updated: May 2, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
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A concise [C+NC+CC] coupling-enabled synthesis of kaitocephalin.

Philip Garner1, Laksiri Weerasinghe, Ian Van Houten

  • 1Department of Chemistry, Washington State University, Pullman, WA 99164-4630, USA. ppg@wsu.edu.

Chemical Communications (Cambridge, England)
|April 3, 2014
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Summary

A 15-step synthesis of kaitocephalin, an ionotropic glutamate receptor antagonist, was achieved starting from aspartic acid. The key pyrrolidine ring was efficiently constructed using an asymmetric [C+NC+CC] reaction.

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Area of Science:

  • Organic Synthesis
  • Medicinal Chemistry
  • Neuroscience

Background:

  • Kaitocephalin is a potent antagonist of ionotropic glutamate receptors (iGluRs).
  • iGluRs play critical roles in synaptic plasticity and neuronal function.
  • Developing efficient synthetic routes to iGluR antagonists is crucial for neurological research.

Purpose of the Study:

  • To report a novel 15-step synthesis of the iGluR antagonist kaitocephalin.
  • To establish an efficient method for constructing the core pyrrolidine ring of kaitocephalin.

Main Methods:

  • The synthesis commenced with aspartic acid as a starting material.
  • A key step involved an asymmetric [C+NC+CC] reaction for pyrrolidine ring formation.
  • The overall synthesis comprised 15 distinct chemical steps.

Main Results:

  • Successful 15-step synthesis of kaitocephalin was achieved.
  • The linchpin pyrrolidine moiety was efficiently assembled in a single operation.
  • The asymmetric [C+NC+CC] reaction proved effective for constructing the chiral pyrrolidine core.

Conclusions:

  • The reported synthesis provides a viable route to kaitocephalin.
  • The efficient pyrrolidine ring construction highlights the utility of asymmetric cycloaddition reactions.
  • This synthesis facilitates further investigation into the pharmacological properties of kaitocephalin.