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Updated: Jun 12, 2026

Mass Spectrometric Analysis of Glycosphingolipid Antigens
Published on: April 16, 2013
Synthesis and biological activity of alpha-glucosyl C24:0 and C20:2 ceramides
Peter J Jervis1, Natacha Veerapen, Gabriel Bricard
1School of Biosciences, University of Birmingham, Edgbaston, Birmingham, UK.
Abstract:
Alpha-glucosyl ceramides 4 and 5 have been synthesised and evaluated for their ability to stimulate the activation and expansion of human iNKT cells. The key challenge in the synthesis of both target molecules was the stereoselective synthesis of the alpha-glycosidic linkage. Of the methods examined, glycosylation using per-TMS-protected glucosyl iodide 16 was completely alpha-selective and provided gram quantities of amine 11, from which alpha-glucosyl ceramides 4 and 5 were obtained by N-acylation. alpha-GlcCer 4, containing a C24 saturated acyl chain, stimulated a marked proliferation and expansion of human circulating iNKT cells in short-term cultures. alpha-GlcCer 5, which contains a C20 11,14-cis-diene acyl chain (C20:2), induced extremely similar levels of iNKT cell activation and expansion.
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