Synthesis and characterization of a novel calcium-selective chelator
作者:Alison McCurdy、Amber M Kawaoka、Holly Thai、Sylvia C Yoon
DOI:10.1016/s0040-4039(01)01677-x
日期:2001.10
A calcium-selective photochromic chelator to study the effects of physiological [Ca2+] oscillations on proteins in vitro or in vivo has been designed. The novel 2,2'-spirobi[2H-1-benzopyran] derivative 1 has been synthesized and the ion complexation properties of 1 with Mg2+, Ca2+, and Sr2+ in aqueous buffered solution have been investigated. The chelator 1 shows modest selectivity for calcium ion (K-11 = 6720 M-1) over magnesium ion (K-11 = 564 M-1) by H-1 NMR titration. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis and metal complexation properties of bisbenzospiropyran chelators in water
As a step towards developing a light-controlled reversible binding switch based on photochromic bisbenzospiropyran for investigating intracellular calcium signaling, substituted bisbenzospiropyran and phenolic chelators were synthesized and examined for metal binding strength. The complexation of these compounds with alkaline earth and zincions in methanol and buffer was characterized using NMR and