An attempt was made to prepare two types of metal complexes with modified cyclodextrins, by which, these complexes were expected to exhibit an enzymatically catalytic effect. One was the binuclear Cu(II) complex with α-cyclodextrin, wherein two primary hydroxyl groups standing opposite to each other were replaced by N-salicylideneethylenediamine groups. The other was the Fe(III) complex with duplicate β-cyclodextrins with a porphyrin ring interposed between them. During the courses of preparation of those complexes, the crude products had to be purified by chromatography, because several by-products were formed.

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