Total synthesis of sordaricin

Lewis N. Mander*, Regan J. Thomson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

(Chemical Equation Presented) An enantioconvergent total synthesis of sordaricin (3), the diterpene aglycon of an important class of antifungal compounds, is described. Two approaches were explored, the first of which utilized a possible biogenetic intramolecular [4 + 2] cycloaddition to form the complete carbon skeleton of the target molecule as a single regioisomer 30. A second approach employed a tandem cycloreversion/ intramolecular [4 + 2] cycloaddition process to afford not only the desired product 30 but also significant quantities of the undesired regioisomer iso-30. An investigation into the reasons for the difference in regioselectivity between these two reactions revealed the intervention of a cycloreversion/cycloaddition pathway at elevated temperatures leading to the formation of iso-30. Experimental evidence supports the hypothesis that iso-30 is the more thermodynamically stable of the two regioisomers.

Original languageEnglish (US)
Pages (from-to)1654-1670
Number of pages17
JournalJournal of Organic Chemistry
Volume70
Issue number5
DOIs
StatePublished - Mar 4 2005

ASJC Scopus subject areas

  • Organic Chemistry

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