Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/1685

Bulletin of the Faculty of Agriculture, Shimane University 14

1980-12-15 発行

β-シクロデキストリン2級水酸基のβ-アミノエチルアミノ基による修飾とその誘導体の金属錯体について

Modification of a sec-Hydroxyl Group of β-Cyclodextrin with a β-Aminoethylamino Group and the Metal Complexes with the Derivative

Mochida, Kazuo

Ozoe, Yoshihisa

Kajimura, Mayumi

Matsui, Yoshihisa

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Mono-(3-β-aminoethylamino-3-deoxy)-β-cyclodextrin (CD-3-en) was synthesized by the tosylation of one of the secondary hydroxyl groups of β-cyclodextrin, followed by the substitution of the tosyl group with an aminoethylamino group. The pK_a values for the conjugate acids of CD-3-en were determined to be 5.18 and 9.25, each of which is significantly smaller than the corresponding value for ethylenediamine (6.85 and 9.93 respectively).
The complexation of CD-3-en with a few metal ions was examined in a buffer solution at pH 10.5 and 25℃. It was revealed that copper(II), cobalt(II), and nickel(II) form 1:2, 1:2 and 1:4 complexes, respectively, with CD-3-en.

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d0030014n026.pdf 615 KB

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