Cation-exchange chromatography and selective complexation in the isolation of branched acyclic polyamines : Syntheses of Ethylidynetris(methanamine) [tame], 2,2-Bis(aminomethyl)propan-1-ol [hmmp], 4,4',4''-Ethylidynetris(3-azabutan-1-amine) [sen] and 5,5',5'-Ethylidynetris(4-azapentan-1-amine) [stn]
Cation-exchange chromatography and selective complexation in the isolation of branched acyclic polyamines : Syntheses of Ethylidynetris(methanamine) [tame], 2,2-Bis(aminomethyl)propan-1-ol [hmmp], 4,4',4''-Ethylidynetris(3-azabutan-1-amine) [sen] and 5,5',5'-Ethylidynetris(4-azapentan-1-amine) [stn]
Synthesis of the smallest tris-(catecholamide) siderophore analogue
作者:N Cheraı̈ti、M.E Brik、G Kunesch、A Gaudemer
DOI:10.1016/s0022-328x(98)00717-7
日期:1999.2
The tris-(catecholamide) (H6L) (8) was synthesised in six steps and characterized. This is the smallest analogue of naturally occurring siderophores structurally related to an approved enterobactin and protochelin model, known up to now.
Stetter; Boeckmann, Chemische Berichte, 1951, vol. 84, p. 834,836
作者:Stetter、Boeckmann
DOI:——
日期:——
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.