Synthesis and electrochemical study of a new chiral tris-catecholamide analogue of enterobactin
作者:N. Cheraïti、M.E. Brik、A. Gaudemer、G. Kunesh
DOI:10.1016/s0960-894x(99)00062-1
日期:1999.3
The comparison of siderophore complex redox potentials with those of physiological reductants may aid in the clarification of the mechanism of iron metabolism. In this paper, a new chiral tris-catecholamide compound N,N:N "-tris-(2,3-dihydroxybenzoyl)-1,1,1-tris-(L-methioninemehyl)- ethane or H6L (<(11)under bar>) has been synthesised in nine steps, and may mimic the release of iron from enterobactin to the agents which are directly involved in cell metabolism. The choice of methionine as a constituent of the siderophore incorporates divalent sulphur which leads to the increase of the reduction potential of the siderophore, and consequently facilitates the iron release [Fe(III)/Fe(II) redox potential E-1/2=-0.749 V vs (SCE)]. (C) 1999 Elsevier Science Ltd. All rights reserved.