Synthesis 2016; 48(23): 4110-4116
DOI: 10.1055/s-0035-1561494
paper
© Georg Thieme Verlag Stuttgart · New York

Concise Preparation of the Bis-THF Core of Annonaceous Acetogenins

Elisa Delgue
Organic Chemistry Department, Facultad de Química, Universidad de la República (UdelaR), 2124 Gral Flores Ave., 11800 Montevideo, Uruguay   Email: gseoane@fq.edu.uy   Email: mbrovetto@fq.edu.uy
,
Margarita Brovetto*
Organic Chemistry Department, Facultad de Química, Universidad de la República (UdelaR), 2124 Gral Flores Ave., 11800 Montevideo, Uruguay   Email: gseoane@fq.edu.uy   Email: mbrovetto@fq.edu.uy
,
Gustavo Seoane*
Organic Chemistry Department, Facultad de Química, Universidad de la República (UdelaR), 2124 Gral Flores Ave., 11800 Montevideo, Uruguay   Email: gseoane@fq.edu.uy   Email: mbrovetto@fq.edu.uy
› Author Affiliations
Further Information

Publication History

Received: 10 May 2016

Accepted after revision: 09 June 2016

Publication Date:
26 July 2016 (online)


Abstract

A concise preparation of the all-(R) threo/trans/threo/ trans/threo bis-THF core present in natural acetogenins is presented. Starting from a terminal alkene, homometathesis and two consecutive stereoselective cyclizations afforded the bis-THF core through a short and efficient sequence. In addition, the isomeric erythro/trans/ threo/trans/erythro bis-THF core was also synthesized in high yield. The starting alkene was previously prepared from a homochiral cis-diol derived from biotransformation of bromobenzene.

Supporting Information