The reaction of cyclo-triphosphate with ethanolamines.

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概要

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• The reaction of <I>cyclo</I>-triphosphate(P<SUB>3m</SUB>) with mono-(MEA), di-(DEA), or triethanolamine(TEA) in an aqueous solution was investigated under various conditions (mixing ratio of MEA, DEA, or TEA to P<SUB>3m</SUB>, pH, temperature, and reaction time). 1) In the pH region of 7–12, P<SUB>3m</SUB> reacted with MEA or DEA to yield tri-, di-, and monophosphate derivatives of MEA or DEA. The phosphoric acid ester of MEA or DEA was not formed at all. 2) The reactivities of MEA and DEA to P<SUB>3m</SUB> were in the order of MEA>DEA, and TEA did not react with P<SUB>3m</SUB>. 3) The reactivity of P<SUB>3m</SUB> with MEA or DEA decreased with the decrease in the pH, and no reaction took place under acidic conditions. 4) The maximum yields of triphosphate derivatives of MEA, <I>N</I>-(2-hydroxyethyl)triphosphoramidate(P<SUB>3</SUB>-(N)MEA) and of DEA, <I>N</I>-bis(2-hydroxyethyl)triphosphoramidate (P<SUB>3</SUB>-(N)DEA), were about 75 and 60% respectively at a molar ratio of 1 : 1, at pH 12, and at room temperature. 5) P<SUB>3</SUB>-(N)MEA and P<SUB>3</SUB>-(N)DEA easily recyclized to the raw material, P<SUB>3m</SUB>, under acidic conditions. 6) The mechanism of the reaction between P<SUB>3m</SUB> and MEA or DEA was investigated.

• 公益社団法人 日本化学会の論文

著者

• TSUHAKO Mitsutomo

  Kobe Pharmaceutical University

• NARIAI Hiroyuki

  Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University

• MOTOOKA Itaru

  Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University

• MIYAJIMA Tohru

  Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University

• Ohashi Shigeru

  Department of Chemistry Faculty of Science Kanazawa University

• Sueyoshi Chiyoko

  Kobe Women's College of Pharmacy

• Sueyoshi Chiyoko

  Kobe Women's College of Pharmacy

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