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Synthesis, structur...
Synthesis, structure and conformation of oligo- and polysaccharides
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- Larsson, Andreas, 1975- (författare)
- Stockholms universitet,Institutionen för organisk kemi
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Widmalm, Göran (preses)
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- Mulard, Laurence, Dr (opponent)
- Unité de Chimie Organique, Institut Pasteur, Paris
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(creator_code:org_t)
- ISBN 917265872X
- Stockholm : Institutionen för organisk kemi, 2004
- Engelska 40 s.
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Abstract
Ämnesord
Stäng
- Carbohydrates are a complex group of biomolecules with a high structural diversity. Their almost omnipresent occurrence has generated a broad field of research in both biology and chemistry. This thesis focuses on three different aspects of carbohydrate chemistry, synthesis, structure elucidation and the conformational analysis of carbohydrates.The first paper describes the synthesis of a penta- and a tetrasaccharide related to the highly branched capsular polysaccharide from Streptococcus pneumoniae type 37. In the second paper, the structure of the O-antigenic repeating unit from the lipopolysaccharide of E. coli 396/C1 was determined along with indications of the structure of the biological repeating unit. In addition, its structural and immunological relationship with E. coli O126 is discussed. In the third paper, partially protected galactopyranosides were examined to clarify the origin of an intriguing 4JHO,H coupling, where a W-mediated coupling pathway was found to operate. In the fourth paper, the conformation of methyl a-cellobioside is studied with a combination of molecular dynamics simulations and NMR spectroscopy. In addition to the expected syn-conformation, detection and quantification of anti-ø and anti-ψ conformers was also possible.
Ämnesord
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- Organic chemistry
- Organisk kemi
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