Synthesis of macrocyclic precursors of the vioprolides

Research output: Contribution to journalArticle

  • External authors:
  • Eibhlin Butler
  • Lucia Florentino
  • Damien Cornut
  • Gonzalo Gomez-campillos
  • Hao Liu
  • Eric J. Thomas

Abstract

The vioprolides are novel depsipeptides that have not been synthesized. However, they have been identified as important targets for synthesis because of their novel biological activities and challenging chemical structures. Following early work on the synthesis of a modified tetrapeptide that contained both the (E)-dehydrobutyrine and thiazoline components of vioprolide D, problems were encountered in taking an (E)-dehydrobutyrine containing intermediate further into the synthesis. A second approach to vioprolides and analogues was therefore investigated in which (E)- and (Z)-dehydrobutyrines were to be introduced by selenoxide elimination very late in the synthesis. A convergent approach to advanced macrocyclic precursors of the vioprolides was then completed using a modified hexapeptide and a dipeptidyl glycerate. In this work, it was necessary to protect the 2-hydroxyl group of the glycerate as its acetate and not as its 2,2,2-trichloroethoxycarbonate. Preliminary studies were carried out on the introduction of the required dehydrobutyrine and thiazoline components into advanced intermediates.

Bibliographical metadata

Original languageEnglish
Pages (from-to)6935-6960
Number of pages5
JournalOrganic & biomolecular chemistry
Volume16
Issue number38
Early online date31 Aug 2018
DOIs
Publication statusPublished - 2018

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