6-脱氧-α-L-吡喃阿洛糖的晶体结构
Crystal structure of 6-de-oxy-α-l-psico-furan-ose.
作者信息
Yoshihara Akihide, Ishii Tomohiko, Kamakura Tatsuya, Taguchi Hiroaki, Fukada Kazuhiro
机构信息
Rare Sugar Research Center, Kagawa University, 2393 Ikenobe, Kagawa 761-0795, Japan.
Department of Advanced Materials Science, Faculty of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan.
出版信息
Acta Crystallogr E Crystallogr Commun. 2015 Nov 28;71(Pt 12):o993-4. doi: 10.1107/S2056989015022215. eCollection 2015 Dec 1.
The title compound, C6H12O5, was crystallized from an aqueous solution of 6-de-oxy-l-psicose (6-de-oxy-l-allulose, (3S,4S,5S)-1,3,4,5-tetra-hydroxy-hexan-2-one), and the mol-ecule was confirmed as α-furan-ose with a (3) T 4 (or E 4) conformation, which is a predominant tautomer in solution. This five-membered furan-ose ring structure is the second example in the field of the 6-de-oxy-ketohexose family. The cell volume of the title compound [742.67 (7) Å(3), Z = 4 at room temperature] is only 1.4% smaller than that of β-d-psico-pyran-ose, C6H12O6 (753.056 Å(3), Z = 4 at room temperature).
标题化合物C₆H₁₂O₅是从6-脱氧-L-阿洛酮糖（6-脱氧-L-阿洛酮糖，(3S,4S,5S)-1,3,4,5-四羟基己烷-2-酮）的水溶液中结晶得到的，该分子被确认为具有(3) T 4（或E 4）构象的α-呋喃糖，这是溶液中的主要互变异构体。这种五元呋喃糖环结构是6-脱氧-己酮糖家族领域中的第二个例子。标题化合物在室温下的晶胞体积[742.67 (7) ų，Z = 4]仅比β-D-阿洛吡喃糖C₆H₁₂O₆（室温下753.056 ų，Z = 4）小1.4%。
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