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Chiral calix[6]arene derivatives were synthesized by the reactions of N-chloroacetyl amino acid ester and 1,3,5-trimethoxy-p-tert-butylcalix[6]arene in the presence of K2CO3. The self-inclusion of the anisole methoxy groups into the calix-cavity stabilizes the compounds in the major flattened cone conformer as shown by their 1H NMR spectra. The larger substituents on the 2,4,6-positions have larger...
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