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IJC-B Vol.50B [2011] >
IJC-B Vol.50B(05) [May 2011] >


Title: Hybrid macrocyclic receptors based on lower rim functionalised thiacalix[4]arene and amino acids: Synthesis, structure and binding properties towards metal ions
Authors: Sreeja, Thulasi
Ganga, Viswanathan Bhagavathy
Praveen, Lakshmananpillai
Varma, Ramavarma Luxmi
Issue Date: May-2011
Publisher: NISCAIR-CSIR, India
Abstract: Peptidothiacalixarene derivatives 4a-d and 7a-d have been synthesized in excellent yields by the reaction of methyl esters of glycine, l-alanine and d- and l-phenyl alanine with lower rim substituted 1,3-diacid chloride and tetraacid chloride derivatives of thiacalixarene. The conformational and hydrogen bonding properties of these conjugates have been investigated by means of 1H NMR in the solution state and by X-ray crystallography in the solid state. Complexation studies performed by UV-Vis and 1H NMR spectroscopy in acetonitrile solution show that the 1,3-disubstituted hybrids selectively bind Hg2+ ions and the orientation of the substituent on the chiral carbon is found to have a significant effect on the binding.
Page(s): 704-714
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.50B(05) [May 2011]

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