Deuterium relaxation time ofα-d-tryptophan included in cyclodextrin host molecules |
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Authors: | Tabushi Iwao Kuroda Yasuhisa Yamada Masahiko Sera Takashi |
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Institution: | (1) Department of Synthetic Chemistry, Kyoto University, Sakyo-ku, 606 Kyoto, Japan |
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Abstract: | Deuterium relaxation times ofd- andl--d-tryptophan included in -cyclodextrin derivatives were directly measured by deuterium NMR spectroscopy. The results showed that the molecular motion of the tryptophan molecule was strongly restricted even in the cavity of unmodified -cyclodextrin and the additional recognition groupings — ammonium and carboxylate — on -cyclodextrin did not affect the molecular motion of tryptophan, though the association constants were significantly enhanced.Deceased on March 22, 1987. |
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Keywords: | Cyclodextrin inclusion deuterium relaxation receptor |
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