Evaluation of the Equilibrium Content of Tautomers of Deoxy-ketohexoses and Their Molar Absorption Coefficient of the Carbonyl Group in Aqueous Solution

• Yoshihara Akihide

  Rare Sugar Research Center, Kagawa University

• Sato Masashi

  Department of Applied Biological Science, Faculty of Agriculture, Kagawa University

• Fukada Kazuhiro

  Department of Applied Biological Science, Faculty of Agriculture, Kagawa University

抄録

The equilibrium tautomeric composition in aqueous solution of 6-deoxy-L-psicose and 1-deoxy-D-tagatose was elucidated by means of ¹³C NMR spectroscopy at 15–50 °C. The molar absorption coefficient of their respective carbonyl group, ε_C=O, was determined from the linear relationship between the absorbance around 280 nm and molar concentration of the acyclic carbonyl form. It was found that ε_C=O for 6-deoxy-L-psicose was almost the same as for D-psicose, whereas ε_C=O for 1-deoxy-D-tagatose was reduced by ca. 25% compared to D-tagatose.

収録刊行物

• Chemistry Letters

  Chemistry Letters 45 (2), 113-115, 2016

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390001204588661504
• NII論文ID: 130005124723
• DOI: 10.1246/cl.150953
• ISSN: 13480715
• ISSN: 03667022
• Web Site: http://www.journal.csj.jp/doi/pdf/10.1246/cl.150953
• 本文言語コード: en
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