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Methyl 3-O-?-l-fucopyranosyl ?-d-gal-acto-pyran-oside: a synchrotron study.

ABSTRACT: The title compound, C(13)H(24)O(10) is the methyl glycoside of a structural element ?-l-Fucp-(1? 3)-?-d-Galp making up two thirds of the repeating unit in the capsular polysaccharide of Klebsiella K63. The conformation of the title compound is described by the glycosidic torsion angles ?(H) = 55?(1)° and ?(H) = -24?(1)°. The hy-droxy-methyl group in the galactose residue is present in the gauche-trans conformation. In the crystal, O-H?O hydrogen bonds connect the disaccharide units into chains along the a-axis direction and further hydrogen bonds cross-link the chains.

SUBMITTER: Eriksson L

PROVIDER: S-EPMC3275268 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature

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Methyl 3-O-α-l-fucopyranosyl α-d-gal-acto-pyran-oside: a synchrotron study.

Eriksson Lars L Widmalm Göran G

Acta crystallographica. Section E, Structure reports online 20120131 Pt 2

The title compound, C(13)H(24)O(10) is the methyl glycoside of a structural element α-l-Fucp-(1→ 3)-α-d-Galp making up two thirds of the repeating unit in the capsular polysaccharide of Klebsiella K63. The conformation of the title compound is described by the glycosidic torsion angles ϕ(H) = 55 (1)° and ψ(H) = -24 (1)°. The hy-droxy-methyl group in the galactose residue is present in the gauche-trans conformation. In the crystal, O-H⋯O hydrogen bonds connect the disaccharide units into chains a ...[more]

PMID: 22347124

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