Zobrazeno 1 - 10
of 32
pro vyhledávání: '"M.E. Brik"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 105:181-183
New lipophilic ligands are synthesized to build potential Magnetic Resonance Imaging contrast agents (MRI). Using the evolution of 1H-NMR chemical shifts δ with concentration of monomer in D2O, the critical micellar concentration (CMC) has been meas
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 9:2315-2320
A new siderophore, N 5, N 6-thiodipropanoyl-bis[ N 1, N 10-bis(2,3-dihydroxy benzoyl-spermidine)]-Fe (III) complex or H 2 LFe has been synthesised. The reaction of the reduced form of this complex with dioxygen has been investigated through electroch
Autor:
M.E. Brik, N. Cheraïti
Publikováno v:
Tetrahedron Letters. 40:4327-4330
Selective O-demethylation of the ortho methyl catecholate of N,N′,N″-tris-(2,3-dimethoxybenzoyl)-1,1,1-tris-(L-methioninemehyl)-ethane (7) has been accomplished by boron tribromide. The intramolecular nucleophilic attack of divalent sulphur on me
Publikováno v:
Journal of Organometallic Chemistry. 575:149-152
The tris-(catecholamide) (H 6 L) ( 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.
Autor:
M.E. Brik, Jacques Courtieu, Bernard-Pierre Roques, Hugues de Rocquigny, Annie-Claude Tessedre, Alain Rimbault, Nasser Khelifa
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 9:109-112
The ability of Clostridium butyricum cultures to hydrolyze three L-leucine-containing dipeptides (Leu-Leu, Leu-Gly and Gly-Leu) in a synthetic minimal medium is demonstrated by using gas chromatography coupled with mass spectrometry. The 13C nuclear
Publikováno v:
ChemInform. 26
Autor:
M.E. Brik
Publikováno v:
ChemInform. 26
Under biphasic conditions (CH2Cl2/H2O) using acetone, oxone, buffer and phase-transfer catalyst Bu4NHSO4(su−), some secondary amines without α hydrogens are oxidized to their corresponding nitroxides in rapid and good yields.
Autor:
M.E. Brik
Publikováno v:
ChemInform. 27
Publikováno v:
ChemInform. 29
Five new dihydroxamic acid ligands (L) (8, 10a, 10b, 10c and 13) have been synthesised and characterised as potential chelating agents for iron (Fe3+). The log stability constants of Fe2L3 and FeL+ from Fe3+ and L2− have been estimated to be logβ=
Publikováno v:
ChemInform. 30
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-dihydroxyben