首页> 外文期刊>European Journal of Medicinal Chemistry: Chimie Therapeutique >Synthesis and reactivity studies on new copper(II) complexes: DNA binding, generation of phenoxyl radical, SOD and nuclease activities.
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Synthesis and reactivity studies on new copper(II) complexes: DNA binding, generation of phenoxyl radical, SOD and nuclease activities.

机译:新型铜(II)配合物的合成和反应性研究:DNA结合,苯氧基自由基的生成,SOD和核酸酶活性。

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摘要

Tridentate ligand PhimpH binds to Cu(II) centre after deprotonation affording a new family of complexes [Cu(Phimp)(H(2)O)](2)(ClO(4))(2) (1), [Cu(Phimp)(2)] (2) and [Cu(Phimp)(L)] (3-5) where L are CH(3)COO(-), SCN(-) and NO(2)(-) respectively. The molecular structures of complexes 1 x CH(3)CN and 3 were determined by X-ray crystallography. Electrochemical studies depicted Cu(II)/Cu(I) couple in the range of -0.50 to -0.65 V vs. Ag/AgCl. EPR spectral studies for complexes 4 and 5 indicated the order of covalent character in 4 > 5 with d(x(2)-y(2)) ground state. The phenoxyl radical complexes have been generated in situ by the oxidation of these complexes. Superoxide dismutase activity and DNA binding studies were examined. These complexes exhibited nuclease activity and the mechanism of DNA cleavage was investigated.
机译:三齿配体PhimpH在去质子化后结合到Cu(II)中心,提供了新的复合物家族[Cu(Phimp)(H(2)O)] [2] [ClO(4))(2)(1),[Cu( Phimp)(2)](2)和[Cu(Phimp)(L)](3-5),其中L分别是CH(3)COO(-),SCN(-)和NO(2)(-)。配合物1 x CH(3)CN和3的分子结构通过X射线晶体学测定。电化学研究表明,相对于Ag / AgCl,Cu(II)/ Cu(I)的耦合范围为-0.50至-0.65V。配合物4和5的EPR光谱研究表明,在d(x(2)-y(2))基态下,共价特征的顺序为4> 5。苯氧基自由基配合物是通过这些配合物的氧化而原位产生的。检查了超氧化物歧化酶活性和DNA结合研究。这些复合物表现出核酸酶活性,并研究了DNA切割的机理。

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