2-Acetamido-2-de-oxy-3-O-Β-d-galactopyranosyl-d-glucose dihydrate

Abstract

In the title compound, C14H25NO11· 2H2O, the primary hydroxyl group connected to the anomeric C atom of the N-acetyl-Β-d-glucopyran-ose residue exhibits positional disorder, with occupancy factors for the and Β anomers of 0.77 and 0.23, respectively. The two torsion angles ( and ) and the bridge angle () that describe conformation of the glycosidic linkage between the galactopyran-ose and glucopyran-ose rings are = -81.6 (3)°, = 118.1 (2)° and = 115.2 (2)°. Two water mol-ecules stabilize the mol-ecular packing by forming hydrogen bonds with the saccharide residues. © 2009 Wada et al.