Palladium(II) and platinum(II) bis(thiosemicarbazone) complexes of the 2,6-diacetylpyridine series with high cytotoxic activity in cisplatin resistant A2780cisR tumor cells and reduced toxicity
作者:Ana I. Matesanz、Inés Leitao、Pilar Souza
DOI:10.1016/j.jinorgbio.2013.04.005
日期:2013.8
Preparation and characterization of four novel 2,6-diacetylpyridine bis(4N-tolylthiosemicarbazonato) palladium(II) and platinum(II) complexes, [PdL1–2] and [PtL1–2], are described. All compounds have been characterized by elemental analysis and by IR and NMR spectroscopy, and the crystal and molecular structures of complexes [PdL2] and [PtL2] have been determined by a single crystal X-ray diffraction
描述了四种新颖的2,6-二乙酰基吡啶双(4 N-甲苯基硫代氨基甲磺酸钠)钯(II)和铂(II)配合物[PdL 1-2 ]和[PtL 1-2 ]的表征。所有化合物均已通过元素分析以及IR和NMR光谱进行了表征,并且配合物[PdL 2 ]和[PtL 2 ]的晶体和分子结构已通过单晶X射线衍射确定。配体充当双齿四齿施主,通过N吡啶原子和N亚胺基与方形平面几何结构的金属中心配位另一个硫半脲酮臂上的S原子位于第四个配位位置,而另一臂的N肼基占据了该位置。已评估了合成的新化合物在体外对NCI-H460,HepG2,MCF-7,A2780和A2780cisR人癌细胞系的抗增殖活性。细胞毒性数据表明[PdL 1 ],[PdL 2 ]和[PtL 2由于其不仅能够绕过A2780cisR细胞中的顺铂抗性而且还能够在乳腺癌MCF-7细胞中表现出高的抗增殖活性,因此可以赋予其重要的抗肿瘤特性。随后在LLC-PK1细