Synthesis 2008(6): 913-916  
DOI: 10.1055/s-2008-1032198
PAPER
© Georg Thieme Verlag Stuttgart · New York

Towards Sucrose Macrocycles with Higher Symmetry via a ‘Click Chemistry’ Route

Sławomir Jarosz*, Bartosz Lewandowski, Arkadiusz Listkowski
Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01-224 Warsaw, Poland
Fax: +48(22)6326681; e-Mail: sljar@icho.edu.pl;
Further Information

Publication History

Received 16 November 2007
Publication Date:
28 February 2008 (online)

Abstract

Chiral macrocycles containing the sucrose skeleton were prepared by a ‘click chemistry’ route. The substrate for the Huisgen reaction was obtained from sucrose in eight steps. The 1,3-dipolar cycloaddition yielded the intramolecular as well as the C 2-symmetric macrocycles. Optimization of the reaction conditions allowed the preparation of both types of adducts with high selectivity and in good yields.

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Although it is known that the Huisgen reaction (without catalyst) usually provides a mixture of the 1,4- and 1,5-triazoles reaction of sucrose synthon 6 with or without catalyst gave the same product.

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The yields are reported for isolated compounds. In all reactions we have observed significant amounts of tars resulting (most likely) from the linear polymerization of the monomer 6.