Synlett 2005(4): 587-590  
DOI: 10.1055/s-2005-862385
LETTER
© Georg Thieme Verlag Stuttgart · New York

Regio- and Enantioselective Synthesis of Novel Functionalized Pyrano­pyrrolidines by 1,3-Dipolar Cycloaddition of Carbohydrates

George Bashiardes*, Céline Cano, Bernard Mauzé
Département de Chimie, Equipe Methodologie et Synthèse de Biomolécules, SFA - CNRS UMR 6514, Université de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers, France
e-Mail: george.bashiardes@univ-poitiers.fr;
Further Information

Publication History

Received 16 December 2004
Publication Date:
22 February 2005 (online)

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Abstract

A new methodology is described for the rapid enantiomeric synthesis of a novel series of pyranopyrrolidines from readily available and inexpensive carbohydrate compounds. The major feature of the method is a highly selective [3+2] cycloaddition reaction of different azomethine ylides with a chiral carbohydrate-derived enone. The reaction proved to be extremely regio- and stereoselective, giving rise to single enantiomeric compounds in all cases. Moreover, the method is totally atom-efficient and amenable to diversity, since structural diversity of the new compounds is dictated by the choice of the starting materials employed.