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Crystal structures of O-acetylated 2-acylamino-2-deoxy-D-galactose derivatives.

Authors
  • Mikeska, Thomas
  • Nieger, Martin
  • Mansikkamäki, Heidi
  • Daniels, Jörg
  • Kolter, Thomas
Type
Published Article
Journal
Carbohydrate Research
Publisher
Elsevier
Publication Date
Sep 26, 2003
Volume
338
Issue
20
Pages
2119–2128
Identifiers
PMID: 14505880
Source
Medline
License
Unknown

Abstract

The X-ray structures of 1,3,4,6-tetra-O-acetyl-2-deoxy-alpha-D-galactopyranoside derivatives with four different 2-(acylamino) substituents have been determined with Mo K(alpha) radiation at 123 K. The structure of the 2-acetylamino derivative and of its acyl-homologs with a 2-(propanoylamino)-, 2-(butanoylamino)-, and 2-(2-methyl-propanoylamino)-group crystallized in the monoclinic space group C2. The pyranose unit of all compounds has the usual 4C(1) shape. The different orientations of the 6-O-acetyl-groups are discussed. Conformations of the acylamino-group are compared to those found in the crystal structure of N-acetyl-alpha-D-galactosamine.

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