The inclusion behaviour of mono-6-(N-acetyltyrosinyl)amino-6-deoxy-β- cyclodextrin and mono-6-(N-acetyltryptophanyl)amino-6-deoxy-β-cyclodextrin with regard to borneol, menthol and 5-methoxypsoralen have been investigated by fluorescence spectroscopy, circular dichroism and NMR spectroscopy. For mono-6-(N-acetyltryptophanyl)amino-6-deoxy-β-cyclodextrin, the weakly self-included indole residue is disincluded, and for 5-methoxypsoralen, fluorescence resonant energy transfer is observed. In contrast, for mono-6-(N-acetyltyrosinyl)amino-6-deoxy-β-cyclodextrin the self-inclusion is sufficiently strong that no disinclusion occurs. A binary complex is postulated to arise from hydrogen bonding between borneol and mono-6-(N-acetyltyrosinyl)amino-6-deoxy-β-cyclodextrin.
|Original language||English (US)|
|Number of pages||5|
|Journal||Journal of the Chemical Society. Perkin Transactions 2|
|State||Published - Jan 1 1996|
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