Polysaccharide-antigen Group Streptococci

Several variations of this concept have been reported.50-52 For example, Ley and Priepke50 prepared the trisaccharide unit, which is derived from the common polysaccharide antigen of a group B Streptococci by a facile one-pot two-step synthesis (Scheme 4.18). In this... 

A facile one-pot synthesis of a trisaccharide unit from the 51. common polysaccharide antigen of group B Streptococci using cyclohexane-1,2-diacetal (CDA) protected rhamnosides. Angew. 

Reducing trisaccharide. Component of the antigen polysaccharide of group B streptococci. Inhibitor of antigen antibody interaction and implicated in onset of bacterial infection. 

Fig. 40.—Agar-diffusion pattern of the acid hydrolyzate of antigens and anti-group L Streptococci serum (S) acid hydrolyzate of group L polysaccharide (well A) native group L polysaccharide (well N), and enzyme hydrolyzate of group L polysaccharide (well E). Photograph of the paper chromatogram, showing release of carbohydrate from the polysaccharide by 1 h of acid hydrolysis, and of enzyme hydrolysis for 6-h periods.

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