The reaction of cyclo-triphosphate with L-valine.

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概要

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• The reaction of <I>cyclo</I>-triphosphate(P<SUB>3m</SUB>) with L-valine in an aqueous solution was studied by means of anionexchange chromatography, paper chromatography, chemical analysis for phosphorus and valine, IR spectroscopy, and ninhydrin reaction. 1) P<SUB>3m</SUB> reacted with L-valine at pH 10–12 to form an unknown compound, the amount of which reached about 22% at pH 12 and about 9% at pH 10. This compound decomposed into orthophosphate(P<SUB>1</SUB>) and valine at a lower pH. 2) The unknown compound was proved to be a P<SUB>1</SUB>-derivative of valine, (<U>Remark: Graphics omitted.</U>), which has a P–N bond in its molecule. 3) In the reaction of P<SUB>3m</SUB> with L-valine at pH 10, in addition to the unknown compound, small amounts of tetra(P<SUB>4</SUB>) and pentaphosphate(P<SUB>5</SUB>) were produced. 4) The disappearance rate of P<SUB>3m</SUB> in this reaction was first-order, and its rate constants were 0.317 and 0.138 d<SUP>−1</SUP> at pH 12 and 10 respectively at room temperature. 5) Short-chain phosphates, such as P<SUB>1</SUB> pyro (P<SUB>2</SUB>), and triphosphate(P<SUB>3</SUB>), did not react with L-valine at all. 6) The mechanism of the reaction of P<SUB>3m</SUB> with L-valine was discussed.

• 公益社団法人 日本化学会の論文

著者

• TSUHAKO Mitsutomo

  Kobe Pharmaceutical University

• Ohashi Shigeru

  Department of Chemistry Faculty of Science Kanazawa University

• Nakahama Akiko

  Kobe Women's College of Pharmacy

• Matsuo Tsuneo

  Kobe Women's College of Pharmacy

• Kobayashi Masamitsu

  Kobe Women's College of Pharmacy

• Fujita Naoko

  Kobe Women's College of Pharmacy

• Fujita Naoko

  Kobe Women's College of Pharmacy

• Nakahama Akiko

  Kobe Women's College of Pharmacy

• Matsuo Tsuneo

  Kobe Women's College of Pharmacy

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