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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 5
BKCSDE 27(5)
May 20, 2006 

Synthesis and Anion Recognition of Cholic Acid-based Tripodal Receptor: A Chloride Selective Anion Receptor
Ki Soo Kim, Nam Ju Cho, Hong-Seok Kim*
Cholic acid, Urea, Hydrogen bonds, Anion recognition, Chloride ion
Synthesis of cholic acid-based tripodal receptor (1) and its high chloride ion affinity in comparison with that of chenodeoxycholic acid (2) and lithocholic acid-based receptor (3) was achieved. Anion binding affinities of the receptors were evaluated by 1H NMR and ITC titrations. Tripodal receptor 1 showed a selective affinity for Cl- over Br-, I-, H2PO4-, and CH3CO2-. The selectivity of 1 for Cl- is about 3 times that of Br-, and 17 times that for H2PO4-.
739 - 743
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