Automated Glycan Assembly in a Variable-Bed Flow Reactor Provides Insights into Oligosaccharide–Resin Interactions

• Eric T. Sletten¹
• José Danglad-Flores¹
• Manuel Nuño²
• Duncan Guthrie²
• Peter H. Seeberger¹

• ¹Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
• ²Vapourtec, Ltd., Park Farm Business Centre, Fornham St. Genevieve, Bury St. Edmunds, Suffolk IP28 6TS, United Kingdom

A pressure-based variable-bed flow reactor built for peptide synthesis and capable of real-time monitoring of resin swelling was adapted for automated glycan assembly. In the context of the solid-phase synthesis of several oligosaccharides, the coupling efficiencies, resin growth patterns, and saccharide solvation during the synthesis were determined. The presented work provides the first estimation of on-resin oligosaccharide solvation and an alternative technique to UV–vis monitoring.

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