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© Valérie Choumet
Mosquitoes were orally infected with the chikungunya virus. Midguts were dissected at day 5 post-infection, fixed and permeabilised. Virus is shown in red (anti-E2 protein, cyanine 3), the actin network in green (phalloidin 548) and nuclei in blue (DAPI).
Publication : Carbohydrate research

Synthesis of specifically deoxygenated disaccharide derivatives of the Shigella dysenteriae type 1 O-antigen

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Carbohydrate research - 01 Sep 1995

Mulard LA, Claudemans CP

Link to Pubmed [PMID] – 7585707

Carbohydr. Res. 1995 Sep;274:209-22

The synthesis of methyl O-alpha-L-rhamnopyranosyl-(1–>2)-alpha-D-galactopyranosides specifically deoxygenated at position 2 (31), or 4 (21) of the rhamnopyranosyl residue was accomplished using methyl 3,4,6-tri-O-benzoyl-alpha-D-galactopyranoside (18) as the glycosyl acceptor. Phenyl thionocarbonate activation of the penta-O-benzoylated disaccharide precursor followed by Barton reduction and Zemplén transesterification gave 31, while 21 was obtained via condensation of the deoxygenated monosaccharide donor with 18, and subsequent debenzoylation of the product.

http://www.ncbi.nlm.nih.gov/pubmed/7585707