Quinoxaline Derivatives Derived from Isomaltooligosaccharides with o-Phenylenediamine under Deoxygenated and Heated Alkaline Conditions(Analytical Chemistry)
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概要
- 論文の詳細を見る
Quinoxaline derivatives derived from isomaltooligosaccharides and o-phenylenediamine (OPD) were studied by ion-exchange chromatography. Under deoxygenated and heated alkaline conditions, the formation of quinoxaline from α-1,6-glucan with OPD proceeded from the reducing-end glucose residue in a complicated way, and the mechanism mainly involved the following processes: 1) formation of quinoxaline derivatives of high molecular weight as a condensation with OPD and 1,2-dicarbonyl compounds at the reducing-end residue of the glucan. 2) formation of several kinds of quinoxaline derivatives of low molecular weight from the reducing-end residue of 1,6-linked glucan as liberated glucose; as a consequence, the one glucose unit smaller 1,6-linked chain was liberated and again reacted with OPD. The rate of decomposition gradually decreased during the liberation of about 7 glucose residues from the reducing end. The characteristics and probable stoichiometry of this alkaline degradation of α-1,6-glucans are discussed, related to the formation of quinoxaline derivatives.
- 社団法人日本農芸化学会の論文
- 1990-06-23
著者
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Hayashi Katsumi
Department of Radiology, National Defense Medical College
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MORITA Naofumi
Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture
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TAKAGI Masanosuke
Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture
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Hayashi K
Kawasaki Research Center T. Hasegawa Co. Ltd.
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Kuriyama M
Department Of Agricultural Chemistry College Of Agriculture University Of Osaka Prefecture
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Morita N
Osaka Prefecture Univ.
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Morita Naofumi
Laboratory Of Applied Microbiology College Of Agriculture:(present Address)department Of Pharmacolog
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Hayashi Katsumi
Department Of Radiology National Defense Medical College
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TSUCHIYA Kazuo
Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University
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Kuriyama Masao
Department Of Agricultural Chemistry College Of Agriculture University Of Osaka Prefecture
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Takagi M
Osaka Prefecture Univ.
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Takagi Masanosuke
Department Of Agricultural Chemistry
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Tsuchiya Kazuo
Department Of Agricultural Chemistry College Of Agriculture University Of Osaka Prefecture
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Tsuchiya Kazuo
Department Of Aeronautics And Astronautics Graduate School Of Engineering Kyoto University
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Hayashi Katsumi
Department Of Gastroenterology Nagoya Daini Red Cross Hospital
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TAKAGI Masanosuke
Laboratory of Biophysical Chemistry, College of Agriculture
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Takagi Masanosuke
Department o f Agricultural Chemistry, College o f Agriculture, University
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Hayashi Katsumi
Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture
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