Conformation of α-Aminobutyric Acid in Aqueous Solution
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概要
- 論文の詳細を見る
Raman spectrum of α-aminobutyric acid has been observed in its 15% aqueous solution (neutral). By comparing it with the Raman and infrared spectra of crystal A (in which 40% of the total molecules are the T-form molecules, 36% G<SUB>a</SUB>-, and 24% G<SUB>b</SUB>-form molecules), crystal B (which consists only of T-form molecules), and a complex crystal of this amino acid with calcium chloride (in which 85% are the G<SUB>a</SUB>-form molecules), it has been shown that the G<SUB>a</SUB>-form molecules are predominant in the aqueous solution. Here, T-, G<SUB>a</SUB>-, and G<SUB>b</SUB>-forms have respectively the amino group, the hydrogen atom, and the carboxy group in the position trans to the methyl group in the internal rotation around the C<SUB>α</SUB>-C<SUB>β</SUB> bond. Proton magnetic resonance spectrum was observed of a C<SUB>γ</SUB>-deuterated product (CD<SUB>3</SUB>CH<SUB>2</SUB>CH NH<SUB>3</SUB><SUP>+</SUP>COO<SUP>−</SUP>) in its aqueous solution at several temperatures in the −1.5 to 91°C range. It has been indicated that the C<I><SUB>a</SUB></I>-form is more stable by about 300 cal/mole than the other two forms.
- 公益社団法人 日本化学会の論文
著者
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Tsuboi Masamichi
Faculty Of Pharmaceutical Sciences University Of Tokyo
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Muraishi Shuichi
Japan Electron Optics Laboratory, Company
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Kajiura Teruo
Japan Electron Optics Laboratory, Company
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Kainosho Masatsune
Central Research Laboratory, Ajinomoto Co., Inc.
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Kainosho Masatsune
Central Research Laboratories, Ajinomoto Co., Inc.
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Akimoto Toshio
Faculty of Pharmaceutical Sciences, The University of Tokyo
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Tamura Fumihide
Central Research Laboratory, Ajinomoto Co., Inc.
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Nakamura Asao
Central Research Laboratory, Ajinomoto Co., Inc.
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Nakamura Asao
Central Research Laboratories, Ajinomoto Co., Inc.
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Tamura Fumihide
Central Research Laboratories, Ajinomoto Co., Inc.
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Kajiura Teruo
Japan Electron Optics Laboratory Co. Ltd.
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Tsuboi Masamichi
Faculty of Parmaceutical Sciences, The University of Tokyo
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