A Water-Soluble Acyclic Phane Receptor Recognizing 2,3-trans-Gallate-Type Catechins
摘要:
To recognize gallate-type catechins in aqueous solution, two water-soluble acyclic phane receptors containing three aromatic rings were synthesized. The binding of these receptors to eight catechin analogues was investigated with H-1 NMR spectroscopy. The stoichiometric ratios of the complexes between the receptors and the catechins were 1:1 in every case. The binding abilities were estimated by H-1 NMR titration. The meta-substituted receptor showed excellent binding ability for the 2,3-trans-gallate-type catechins. This study revealed that a simple acyclic phane receptor can distinguish differences in the structures of the catechin analogues.
A Water-Soluble Acyclic Phane Receptor Recognizing 2,3-trans-Gallate-Type Catechins
摘要:
To recognize gallate-type catechins in aqueous solution, two water-soluble acyclic phane receptors containing three aromatic rings were synthesized. The binding of these receptors to eight catechin analogues was investigated with H-1 NMR spectroscopy. The stoichiometric ratios of the complexes between the receptors and the catechins were 1:1 in every case. The binding abilities were estimated by H-1 NMR titration. The meta-substituted receptor showed excellent binding ability for the 2,3-trans-gallate-type catechins. This study revealed that a simple acyclic phane receptor can distinguish differences in the structures of the catechin analogues.