引用本文:
张有明, 魏太保. β-环糊精对D/L-酪氨酸对映体的手性识别及超分子包合物的合成[J]. 应用化学,
1998, 15(6): 45-48.
Citation: Zhang Youming, Wei Taibao. Chiral Recognition of D/L-Tyrosine by β-Cyclodextrin and Synthesis of Supramolecular Inclusion Compound[J]. Chinese Journal of Applied Chemistry, 1998, 15(6): 45-48.
Citation: Zhang Youming, Wei Taibao. Chiral Recognition of D/L-Tyrosine by β-Cyclodextrin and Synthesis of Supramolecular Inclusion Compound[J]. Chinese Journal of Applied Chemistry, 1998, 15(6): 45-48.
β-环糊精对D/L-酪氨酸对映体的手性识别及超分子包合物的合成
English
Chiral Recognition of D/L-Tyrosine by β-Cyclodextrin and Synthesis of Supramolecular Inclusion Compound
Abstract:
The chiral recognition action of U-cyclodextrin(U-CD) to D/L-tyrosine(D/L-tyr) have been studied by circular dichroism measurement. The solid supramolecular inclusion compound of U-CD with L-tyr has been prepared and characterized by elemental analysis, thermal analysis, thin-layer chromatography and X-ray diffraction analysis. The inclusion equilibrium constants were obtained approximately by fluorescence spectrophotometry. The results indicated that U-CD showed a higher affinity for L-tyr than for D-tyr and it formed a 11 host-guest compound with L-tyr of constitution L-tyr/U-CD° 12H2O. The formation constant is calculated to be 5.13 × 103 mol-1° L. The inclusion compound had a more or less greater thermal stability than tyrosine and U-CD.
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Key words:
- U-cyclodextrin
- / D/Ltyrosine
- / supramolecular inclusion compound
- / synthesis
- / chiral recognition
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