The synthesis of the ribosyl-ribitol derivatives 12 and 1,7 (Scheme 2) is presented. The compounds served as building blocks for the preparation of protected fragments(2\_4, n=l or 2; Fig. 2) of the title polysaccharide. The bifunctional reagent bi.sCl-benzotriazolyll-Zchlorophenylphosphate (l\_S,
The synthesis of two repeating units of haemophilus influenzae type a capsular antigen
β Scribed by Barbara Grzeszczyk; Anna Banaszek; Aleksander Zamojski
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 805 KB
- Volume
- 175
- Category
- Article
- ISSN
- 0008-6215
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β¦ Synopsis
The repeating units 2-O-beta-D-glucopyranosyl-L-ribitol 4'- and 1-phosphate of Haemophilus influenzae type a capsular antigen have been synthesised by condensation of an alpha-D-glucopyranosyl bromide derivative with 5-O-allyl-1,2,3-tri-O-benzyl-D-ribitol followed by selective deprotection of HO-4' or HO-1, phosphorylation, and removal of the blocking groups.
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