Calorimetric investigation of N-acyl amino acids.
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概要
- 論文の詳細を見る
The melting characteristics of <I>N</I>-acyl amino acids were examined using a differential scanning calorimeter (DSC). The melting-point temperature of <I>N</I>-dodecanoyl L-amino acid increased with the size of its amino acid residue, while the order was opposite for the DL-amino acids. The racemic derivatives formed racemic compounds in their solid states. Each <I>N</I>-dodecanoyl L-amino acid had a larger enthalpy and entropy-of-fusion than its racemic isomer. Differences in the thermodynamic quantities between the optically active and racemic isomers were larger for <I>N</I>-dodecanoylvaline and -leucine compared with those of <I>N</I>-dodecanoylalanine. A mixture of these molecules were also studied. Each racemic isomer of <I>N</I>-dodecanoylalanine and -leucine partly formed a racemic pair in the liquid state.
- 公益社団法人 日本化学会の論文
著者
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Murata Kazuhiko
Departments Of Diagnostic Radiology Gunma University School Of Medicine
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Asakawa Tsuyoshi
Department Of Chemistry And Chemical Engineering Faculty Of Engineering Kanazawa University
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Miyagishi Shigeyoshi
Department Of Chemistry And Chemical Engineering Faculty Of Engineering Kanazawa University
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Matsumura Seiichi
Department Of Physics Gakushuin University
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Nishida Morie
Department of Industrial Chemistry, Faculty of Technology, Kanazawa University
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Miyagishi Shigeyoshi
Department of Industrial Chemistry, Faculty of Technology, Kanazawa University
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Murata Kazuhiko
Department of Industrial Chemistry, Faculty of Technology, Kanazawa University
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Matsumura Seiichi
Department of Industrial Chemistry, Faculty of Technology, Kanazawa University
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