Novel oligosaccharides, immunogens and vaccines and methods of preparing disseoligosaccharider, immunogens and vaccines

摘要

The invention relates to new oligosaccharides comprising the structure (D-ribose-D-ribitol-phosphate)m, (D-ribitol-phosphate-D-ribose)m or (phosphate-D-ribose-D-ribitol)m, m being 2,3,4 .... 19 or 20, to immunogens containing such oligosaccharide, to vaccines containing such immunogens and to methods for preparing such oligosaccharides, immunogens and vaccines. The vaccine is very suitable for treating infections caused by Haemophilus Influenzae type b.