Synthesis of multivalent Streptococcus suis adhesion inhibitors by enzymatic cleavage of polygalacturonic acid and 'click' conjugation

Hilbert M. Branderhorst, Raymond Kooij, Annika Salminen, Lieneke H. Jongeneel, Christopher J. Arnusch, Rob M.J. Liskamp, Jukka Finne, Roland J. Pieters

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

A galabiose disaccharide building block was synthesized by an efficient pectinase cleavage of polygalacturonic acid and subsequent chemical functional group transformations. Besides the disaccharide, the corresponding trisaccharide was also obtained and modified. The compounds were subsequently conjugated to dendrimers with up to eight end groups using 'click' chemistry. The compounds were evaluated as inhibitors of adhesion of the pathogen Streptococcus suis in a hemagglutination assay and strong inhibition was observed for the tetra- and octavalent galabiose compound with MIC values in the low nanomolar range. The corresponding octavalent trisaccharide was a ca. 20-fold weaker inhibitor.

Original languageEnglish
Pages (from-to)1425-1434
Number of pages10
JournalOrganic and Biomolecular Chemistry
Volume6
Issue number8
DOIs
StatePublished - 8 Apr 2008
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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