Abstract
In this article we describe a novel one step stereocontrolled synthesis of alkyl 1-O-β-D-fructopyranosides from totally unprotected D-fructose. In order to avoid oligomerization of D-fructose the reactions were performed in heterogeneous media. Thus, long chain alcohols, as acceptors, were treated with D-fructose in the presence of iron(III) chloride as the promoter to give the alkyl substituted products in yields of approximately 30%. The materials produced were found to self-organise and form liquid crystal mesophases. One of the thermotropic phases exhibited by this family of compounds was found to be atypical of liquid crystal modifications normally exhibited by glycolipids. The structure of this phase was investigated by a wide variety of techniques, and sufficient evidence was gained to indicate that it is novel. A variety of possible arrangements of the molecules in the self-organised state is given based on the preliminary data.
Published Version
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