Molecular recognition of ω-amino acids by thiazolobenzocrown receptors: a GABA-selective ionophore
作者:Young Rae Yi、Ki-Soo Kim、Aasif Helal、Hong-Seok Kim
DOI:10.1080/10610278.2012.726731
日期:2013.1
Three new thiazolobenzocrown (TBC) ethers conjugated with picolinic acid, benzoic acid and pyridylmethyl were synthesised and their binding properties towards amino acids were assessed by 1H NMR titration and isothermal titration calorimety (ITC). The TBC-picolinic acid conjugate () showed a pronounced selectivity towards GABA by the 1H NMR titration, and the association constant for GABA had the largest value determined by ITC. The association constant of 4 for GABA was about 19 times higher than that of glycine.
Synthesis of thiazole-containing benzo-crown ethers
作者:Hong-Seok Kim、Young Kook Koh、Jun-Hyeak Choi
DOI:10.1002/jhet.5570350134
日期:1998.1
containing the thiazole subcyclic moity have been synthesized. Reaction of 1,2-bis(thioamidomethyloxy)benzene 2 with ethyl bromopyruvate in ethanol provided 1,2-bis(thiazolyl)benzene 4 (80%) along with thiazole 5 (14%). Reduction of 4 with lithium aluminum hydride followed by mesylationbromination gave 7. Similar treatment of 5 with lithium aluminum hydride followed by bromination resulted in 12. Benzo-crown