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A Modular Construction of Epidithiodiketopiperazines.

Thomas N Snaddon1, Toya D Scaggs1, Colin M Pearson1

  • 1Department of Chemistry , Indiana University , 800 East Kirkwood Avenue , Bloomington , Indiana 47405 , United States.

Organic Letters
|June 12, 2019
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Researchers developed a new modular synthesis for epidithiodiketopiperazines (ETPs). This method uses a triketopiperazine building block for efficient preparation of ETPs and their analogues, like (±)-hyalodendrin.

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Area of Science:

  • Organic Chemistry
  • Medicinal Chemistry
  • Synthetic Chemistry

Background:

  • Epidithiodiketopiperazines (ETPs) are a class of compounds with significant biological activities.
  • Existing synthetic methods for ETPs and their analogues are often complex and lack modularity.
  • There is a need for more direct and versatile synthetic strategies to access diverse ETP structures.

Purpose of the Study:

  • To report a novel, modular synthetic approach for epidithiodiketopiperazines (ETPs).
  • To demonstrate the utility of a bifunctional triketopiperazine building block.
  • To enable the concise synthesis of ETP analogues, including (±)-hyalodendrin.

Main Methods:

  • Utilized a bifunctional triketopiperazine as a key building block.
  • Employed a modular strategy involving enolate alkylation.
  • Incorporated site-selective nucleophile addition for structural elaboration.

Main Results:

  • Successfully synthesized (±)-hyalodendrin using the developed method.
  • Generated a range of novel ETP analogues.
  • Demonstrated the straightforward and modular nature of the synthetic route.

Conclusions:

  • The reported method provides a direct and modular pathway to ETPs.
  • The triketopiperazine building block facilitates the synthesis of diverse ETP analogues.
  • This strategy addresses the need for more efficient access to biologically relevant ETP compounds.