Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 9 (September 2013)

organic compounds

Acta Cryst. (2013). C69, 1047-1050    [ doi:10.1107/S0108270113019021 ]

Methyl 4-O-[beta]-D-xylo­pyranosyl [beta]-D-manno­pyran­oside, a core disac­charide of an anti­freeze glycolipid

W. Zhang, A. G. Oliver, H. M. Vu, J. G. Duman and A. S. Serianni

Abstract: Methyl [beta]-D-xylo­pyranosyl-(1[rightwards arrow]4)-[beta]-D-manno­pyran­oside, C12H22O10, crystallized as colorless block-like needles from methanol-water solvent. Comparisons to the inter­nal linkage conformations in the two crystallographic forms of the structurally related disaccharide methyl [beta]-D-manno­py­ran­osyl-(1[rightwards arrow]4)-[beta]-D-xylo­pyran­oside are discussed. Intra­mol­ecular inter-residue hydrogen bonding is observed between one manno­pyranosyl hy­droxy O atom and the ring O atom of the xylo­pyranosyl residue. Inter­molecular hydrogen bonding yields a bilayered two-dimensional sheet of mol­ecules that are located parallel to the bc plane.

Formula: C12H22O10

Keywords: crystal structure; disaccharides; anti­freeze glycolipid.

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[ doi:10.1107/S0108270113019021/fn3140sup3.pdf ]
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