Abstract
A novel type of molecular tweezers with different chiral center and cleft has been designed and prepared by using α-hyodeoxycholic acid as spacer and d/ l-amino acid methyl ester as chiral arm attached at 3-position. Their structures were elucidated by 1H NMR, FTIR and elemental analysis. Their recognition properties for various d/ l-amino acid methyl esters were also investigated. The preliminary results indicated that these chiral single-armed molecular tweezers exhibited good recognition ability for d/ l-amino acid methyl esters with high association constant (up to 5.24 × 10 3 L mol −1).
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