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β-d-Gulose
Tomohiko Ishii1, Shunsuke Ohga1, Kazuhiro Fukada2
1Department of Advanced Materials Science, Faculty of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan.
Summary
This study identifies the crystal structure of a galactose epimer, β-d-pyranose. Molecular analysis reveals tape-like structures formed by hydrogen bonds, creating a complex three-dimensional network in the crystal lattice.
Area of Science:
- Carbohydrate Chemistry
- Crystallography
- Structural Biology
Background:
- Understanding the three-dimensional structure of carbohydrates is crucial for elucidating their biological functions.
- Galactose, a key monosaccharide, exists in various isomeric and conformational forms.
Purpose of the Study:
- To determine the crystal structure of a specific C-3 epimer of d-galactose.
- To elucidate the intermolecular interactions and packing in the crystalline state.
Main Methods:
- Single crystal X-ray diffraction was employed to analyze the crystallized compound.
- Analysis of hydrogen bonding patterns and conformational analysis of the pyranose ring.
Main Results:
- The compound was confirmed as β-d-pyran-ose with a (4)C1 (C1) conformation.
- Intramolecular hydrogen bonds between hydroxyl groups at C-1 and C-6 positions form tape structures.
- These tapes are further interconnected via hydrogen bonds, establishing a 3D network.
Conclusions:
- The study provides detailed structural insights into a galactose epimer.
- The observed hydrogen bonding network dictates the crystal packing and stability.
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