Solid-Phase Synthesis of a Fragment of the Capsular Polysaccharide ofHaemophilus InfluenzaeType B UsingH-Phosphonate Intermediates

Abstract
A pentameric fragment of the capsular polysaccharide of Haemophilus influenzae type b, containing a linker group, was synthesized by a simple solid-phase procedure. Cross-linked polystyrene was used as a solid phase, and a benzyl-protected ribosylribitol H-phosphonate was used as monomer. A non-promoted glycosidation reaction was used for preparation of the ribosylribitol monomer.