期刊
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
卷 57, 期 1-4, 页码 261-264出版社
SPRINGER
DOI: 10.1007/s10847-006-9186-y
关键词
cyclodextrin dimer; cystine; picolinylamido group; copper ion
A novel cyclodextrin (CD) dimer linked with a bis(picolinyl)cystine (Cys) moiety was prepared by the coupling of Boc-protected Cys with amino-modified CDs, followed by deprotection of the Boc groups and bispicolinylation. The dimer showed less affinity to an organic guest molecule compared to that of a native CD monomer. It was attributed to an intramolecular inclusion of the pyridine moiety into CD cavity. The dimer caused significant increase of its organic guest affinity by an addition of a copper ion. The included pyridine group may come out of a CD cavity to bind the copper ion and the two CDs included cooperatively and intermolecularly a guest molecule with high affinity.
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