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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Novel vanadyl complexes of acetoacetanilide: Synthesis, characterization and inhibition of proteintyrosine phosphatase
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Novel vanadyl complexes of acetoacetanilide: Synthesis, characterization and inhibition of proteintyrosine phosphatase

机译:乙酰乙酰苯胺的新型钒配合物:蛋白酪氨酸磷酸酶的合成,表征和抑制

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摘要

Three novel vanadyl complexes, [VO(OH)(aa)(Haa)]·Haa (1), [VO(aa)_2(H_2O)] (2) and [VO(OH)(aa)(Haa)] (3), were synthesized in the reaction between vanadyl sulfate and acetoacetanilide (Haa), with a stoichiometry of 1:2, in water/ethanol solution. These complexes have been characterized by elemental analysis, ESR, IR, UV-Vis spectroscopy and cyclic voltammetry. Their composition depends on pH and on the ethanol to water ratio. All the complexes contain two acetoacetanilide ligands in the coordination sphere, in the anionic form (2) or anionic and neutral form (1 and 3), and have a distorted tetragonal bipyramidal geometry. The ligand alone does not cause PTP1B inhibition, while the activity of the synthesized complexes is comparable or higher than that of [VO(mal)_2], which is known as a strong inhibitor.
机译:三种新颖的钒基络合物[VO(OH)(aa)(Haa)]·Haa(1),[VO(aa)_2(H_2O)](2)和[VO(OH)(aa)(Haa)]( 3)是在水/乙醇溶液中以化学计量比为1:2的硫酸氧钒与乙酰乙酰苯胺(Haa)之间的反应合成的。这些配合物已通过元素分析,ESR,IR,UV-Vis光谱和循环伏安法进行了表征。它们的组成取决于pH值和乙醇与水的比例。所有的络合物在配位域中均含有两个乙酰乙酰苯胺配体,呈阴离子形式(2)或阴离子和中性形式(1和3),并具有扭曲的四方双锥体几何形状。单独的配体不会引起PTP1B抑制,而合成的复合物的活性与[VO(mal)_2]相当或更高,后者被称为强抑制剂。

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