Linker units oligosaccharides

Certain linker units lend themselves to the solid-phase synthesis of oligosaccharides. Roush and Hunt cleaved trisaccharides 121 from a sulfone-based linker unit using a nucleophile (Nu = iodide, sodium acetate, or sodium azide) to provide sugars ready for additional substitution, if required (Scheme 3.24). ... 

Douglas, S P, Whitfield, D M, Krepinsky, J J, Polymer-supported solution synthesis of oligosaccharides using a novel versatile linker for the synthesis of D-mannopentaose, a structural unit of D-mannans of pathogenic yeasts, J. Am. Chem. Soc., 117, 2116 -2117, 1995. 

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