Abstract
Although 6-azido-6-deoxy-l-galactose in aqueous solution is in equilibrium between the open-chain, furanose and pyranose forms, it crystallizes solely as 6-azido-6-deoxy-α-l-galactopyranose monohydrate, C6H11N3O5·H2O, with the six-membered ring adopting a chair conformation. The structure exists as hydrogen-bonded chains, with each molecule acting as a donor and acceptor of five hydrogen bonds. There are no unusual crystal packing features and the absolute configuration was determined from the use of 1-azido-1-deoxy-d-galactitol as the starting material.
Highlights
6-azido-6-deoxy-l-galactose in aqueous solution is in equilibrium between the open-chain, furanose and pyranose forms, it crystallizes solely as 6-azido-6-deoxy--lgalactopyranose monohydrate, C6H11N3O5H2O, with the six-membered ring adopting a chair conformation
The structure exists as hydrogen-bonded chains, with each molecule acting as a donor and acceptor of five hydrogen bonds
There are no unusual crystal packing features and the absolute configuration was determined from the use of 1-azido-1deoxy-d-galactitol as the starting material
Summary
Orthorhombic, P21 21 21 a = 5.9687 (3) Å DENZO/SCALEPACK (Otwinowski & Minor, 1997) Rint = 0.053 a Department of Organic Chemistry, Chemical Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, England, bRare Sugar Research Centre, Kagawa University, 2393 Miki-cho, Kita-gun, Kagawa 761-0795, Japan, and c
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