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Isopropyl 2,3,4,6-tetra-O-acetyl-?-d-glucopyran-oside.

ABSTRACT: The title compound, C(17)H(26)O(10), was formed by a Koenigs-Knorr reaction of 2,3,4,6-tetra-O-acetyl-?-d-glucopyranosyl bromide and propan-2-ol. The central ring adopts a chair conformation. The crystal does not contain any significant inter-molecular inter-actions.

SUBMITTER: Monch B

PROVIDER: S-EPMC3569224 | biostudies-other | 2013 Feb

REPOSITORIES: biostudies-other

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Isopropyl 2,3,4,6-tetra-O-acetyl-β-d-glucopyran-oside.

Mönch Bettina B Emmerling Franziska F Kraus Werner W Becker Roland R Nehls Irene I

Acta crystallographica. Section E, Structure reports online 20130104 Pt 2

The title compound, C(17)H(26)O(10), was formed by a Koenigs-Knorr reaction of 2,3,4,6-tetra-O-acetyl-α-d-glucopyranosyl bromide and propan-2-ol. The central ring adopts a chair conformation. The crystal does not contain any significant inter-molecular inter-actions. ...[more]

PMID: 23424447

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n-Propyl 2,3,4,6-tetra-O-acetyl-?-d-glucopyran-oside.

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Project description:The pyran-oside ring in the title compound, C(21)H(24)O(11), has a chair conformation with the substituted benzene ring occupying an equatorial position. The crystal packing is dominated by C-H?O inter-actions that lead to the formation of supra-molecular layers in the ab plane.

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Redetermination of methyl 3,4-O-isopropyl-idene-?-D-fucopyran-oside monohydrate.

Project description:In the title compound, C(10)H(18)O(5)·H(2)O, the fucopyran-oside ring adopts a chair conformation. The crystal packing is stabilized by inter-molecular O-H?O and C-H?O hydrogen bonds together with intra-molecular O?O [2.2936?(8)?Å] and inter-molecular O?O [2.7140?(8)-2.829?(3)?Å] short contacts. The mol-ecules are linked together to form an infinite chain along the a axis. This structure has been solved previously but with no R-values [Spiers (1931). Z. Kristallogr. Kristallgeom. Kristallphys. Kristallchem.78, 101].

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