Synthesis 2006(10): 1673-1681  
DOI: 10.1055/s-2006-926456
PAPER
© Georg Thieme Verlag Stuttgart · New York

Approach to the Eleutherobin Core: Synthesis of a Key Intermediate by Intramolecular­ Diels-Alder Cycloaddition

Hélène Bruyère, Catarina Dos Reis, Simona Samaritani, Stéphanie Ballereau, Jacques Royer*
Synthèse et Structure de Molécules d’Intérêt Pharmacologique, UMR 8638, CNRS-Université René Descartes, Faculté de Pharmacie, 4 Avenue de l’Observatoire, 75270 Paris cedex 06, France
Fax: +33(1)43291403; e-Mail: jacques.royer@univ-paris5.fr;
Further Information

Publication History

Received 27 October 2005
Publication Date:
27 April 2006 (online)

Abstract

An attractive intermediate in the total synthesis of the eleutherobin core has been obtained. Both syn and anti aldol diastereoisomers were synthesized by two different diastereoselective reaction sequences from 5-methyl-4-(pyrrolydin-1′-yl)-5H-furan-2-one. Each diastereoisomer was esterified and subjected to an intramolecular Diels-Alder reaction, which led to an intermediate that possesses rings A and C of the eleutherobin skeleton.

1

Present address: Dipartimento di Chimica e Chimica Industriale Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy.