Synthesis 2014; 46(06): 761-770
DOI: 10.1055/s-0033-1340850
paper
© Georg Thieme Verlag Stuttgart · New York

Asymmetric Synthesis of Both Enantiomers of a δ-Lactone Analogue of Muricatacin

Robert Doran
Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland   Fax: +353(1)7162501   Email: patrick.guiry@ucd.ie
,
Patrick J. Guiry*
Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland   Fax: +353(1)7162501   Email: patrick.guiry@ucd.ie
› Author Affiliations
Further Information

Publication History

Received: 18 December 2013

Accepted after revision: 03 February 2014

Publication Date:
21 February 2014 (online)


Abstract

The asymmetric synthesis of both enantiomers of the δ-lactone analogue of the antitumoral natural product γ-lactone muricatacin has been carried out. Initial attempts to also synthesize the natural product proved unsuccessful due to the poor reactivity of the Grignard reagent derived from 2-(bromomethyl)-1,3-dioxolane. The designed synthetic route enabled us to increase the ring size to generate the δ-lactone analogue employing Sharpless asymmetric epoxidation and ZrCl4-catalyzed intramolecular acetalization as the key steps.

Supporting Information