Enantioselective Fluorescent Sensors for Amino Acid Derivatives Based on BINOL Bearing S-tryptophan Unit: Synthesis and Chiral Recognition |
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Authors: | Kuo-Xi Xu Peng-Fei Cheng Jin Zhao Chao-Jie Wang |
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Affiliation: | (1) Institute of Fine Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China;(2) Key Lab of Natural Medicinal and Immunal Engineering, Henan University, Kaifeng, 475004, China; |
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Abstract: | Four novel derivatives of BINOL bearing S-tryptophan unit have been prepared and the structures of these compounds characterized by IR, MS, 1H and 13C NMR spectroscopy and elemental analysis. The enantioselective recognition of these receptors has been studied by fluorescence titration and 1H NMR spectroscopy. The receptors exhibited different chiral recognition abilities towards N-Boc-protected amino acid anions and formed 1:1 complexes between host and guest. Receptors exhibit excellent enantioselective fluorescent recognition ability towards the amino acid derivatives. |
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