Synthesis 2009(4): 567-576  
DOI: 10.1055/s-0028-1083283
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Synthesis of Divalent 2,2′-Linked Mannose Derivatives by Homodimerization

Filip S. Ekholma, Monika Polákováa,b, Agnieszka J. Pawłowicza, Reko Leino*a
a Laboratory of Organic Chemistry, Åbo Akademi University, 20500 Åbo, Finland
Fax: +358(2)2154866; e-Mail: reko.leino@abo.fi;
b Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravska cesta 9, 845 38 Bratislava, Slovakia
Further Information

Publication History

Received 22 September 2008
Publication Date:
27 January 2009 (online)

Abstract

Several studies have implicated (1→2)-linked mannans as biologically relevant compounds. Recently, there has been a growing interest in the synthesis of multivalent carbohydrate assemblies due to their ability to target multiple receptors simultaneously. In the present work, a protective group strategy, based on the methodology originally developed by Crich, has been utilized for the homodimerization of olefinic carbohydrates, allowing a highly diastereoselective synthesis of some divalent structures. Furthermore, it is shown that divalent donors may undergo coupling reactions without losses in stereoselectivity or efficiency. The strategies described may potentially be applied to the synthesis of diverse neoglycoconjugates and oligosaccharides.