N,N′-bis-(3,4,5-trimethoxybenzyl) ethylenediamine N,N′-diacetic acid as a new iron chelator with potential medicinal applications against oxidative stress
N,N'-bis-(3,4,5-trimethoxybenzyl) ethylenediamineN,N,-diaceticacid dihydrochloride (OR10141) is a member of a recently described series of "oxidativestress activatable ironchelators." These chelators have a relatively low affinity for iron but can be site-specifically oxidized, in situations mimicking oxidativestress in vitro, into species with strong iron-binding capacity. It is hoped that this
Synthesis of novel tetrahydroimidazole derivatives and studies for their biological properties
作者:Vibha Sharma、M.S.Y Khan
DOI:10.1016/s0223-5234(01)01256-9
日期:2001.8
Ethylenediamine was reacted with suitable aromatic aldehydes in order to prepare their respective diSchiff bases. These compounds were then reduced to give the corresponding tetrahydrodiSchiff bases, which were low melting in nature. Finally, these derivatives were condensed with different aromatic aldehydes to give the desired tetrahydroimidazoles. The structures of all these compounds were established on the basis of spectral data. These novel tetrahydroimidazoles showed promising anti-inflammatory and analgesic activity. The compounds were also screened for their anti-bacterial property against Staphylococcus aureus and Escherichia coli. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
Khan; Chawla, Gita, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 3, p. 653 - 663
作者:Khan、Chawla, Gita
DOI:——
日期:——
Two different 1D-chains in the structures of the copper(I) coordination polymers based on bidentate Schiff-base building units and thiocyanate anions as bridging ligands
The reaction of the bidentate Schiff-base ligands (3,4,5-MeO-ba)(2)en (L-1) and (4-Me-ba)(2)en (L-2) with Cu(SCN) in CH3CN yielded two copper(I) coordination polymers [Cu(L-1)(SCN)](n) (1) and [Cu(L-2)(SCN)](n) (2), which have been characterized by elemental analyses, IR- and H-1 NMR-spectroscopy, and X-ray crystallography. The non-centrosymmetric structures of both Cu(I) complexes consist of an one-dimensional polymeric chain in which copper(I) ions are bridged by two thiocyanate groups bonding in an end-to-end fashion. The Cu(I)center dot center dot center dot Cu(I) separation is 5.604 angstrom in 1 and 5.706 angstrom in 2. (C) 2009 Elsevier B. V. All rights reserved.