leaving group like alizarin as the Pt(II) ligand to reduce the deactivation processes of the pharmacophore enacted by Pt resistant cancer cells. In this study a new series of neutral mixed-ligand Pt(II) complexes bearing alizarin and a variety of diamine ligands were synthesized and spectroscopically characterized by FT-IR, NMR and UV–Vis analyses. Three Pt(II) compounds, i.e., 2b, 6b and 7b, emerging
在过去的几十年里,人们做出了许多努力来选择性地将抗肿瘤药物转运到其潜在的靶位点,以提高功效和选择性。事实上,这一方面可以极大地提高特定抗癌药物的有益效果,特别是在像三阴性乳腺癌这样的孤儿肿瘤的情况下。一种可能的策略依赖于利用保护性离去基团(如茜素)作为 Pt( II ) 配体,以减少 Pt 抗性癌细胞产生的药效团的失活过程。在这项研究中,合成了一系列带有茜素和多种二胺配体的新中性混合配体 Pt( II ) 配合物,并通过 FT-IR、NMR 和 UV-Vis 分析进行了光谱表征。选择三种 Pt( II ) 化合物,即2b 、 6b和7b ,在结构特性和细胞毒性作用方面都不同(无效,分别为 10.49 ± 1.21 μM 和 24.5 ± 1.5 μM),进行更深入的研究。茜素作为选择性载体的能力。该研究包括针对三阴性乳腺癌细胞系的体外细胞毒性评估,以及与所选 Pt( II ) 复合物与模型蛋白和
Anticancer platinum-drug delivered by mesenchymal stromal cells improves its activity on glioblastoma
respect to the free drug. The release of Pt-8AQ did not occur in Evs, as demonstrated for other drugs, but it could be delivered bound to some specific carriers able to enhance its bioavailability and efficacy. Some hypotheses are discussed to explain this surprisingly finding out that, however, it needs more investigations. The major conclusions are that cell mediated drugdelivery systems could provide
Synthesis and spectral studies on platinum complexes with mono- and bidentate N-donor organic ligands
作者:P. Umapathy、Rashida A. Harnesswala
DOI:10.1016/s0277-5387(00)83944-3
日期:1983.1
3/2 binding energies in the square planar Pt(II) complexes are observed in the range 198.8 ± 0.8 eV. The ν (PtCl) vibrations ( ca 335 and 320 cm −1 ) corresponding to two cis -Cl ligands were observed in the IR spectra. The extent of the interaction between cis -dichloro- bis -(theophylline)platinum(II) with calf thymus DNA has beenstudied. The UV difference spectra resulting from aquated Pt II (theoph)
摘要类型为PtLX 2,PtL 2 X 2,PtLX“的铂(II)配合物和PtLXY(P =含氮供体原子的单或双齿有机配体; X = Cl或Br; X'=草酸盐或丙二酸盐和Y = Br)已合成,并通过其元素分析,IR和X射线光电子能谱数据进行了表征。Pt 4f 7/2的结合能表明,1,8-萘二胺配体比这里研究的其他配体更好地为金属提供了电子密度。在方形平面Pt(II)配合物中的Cl 2p 3/2结合能在198.8±0.8 eV范围内观察到。在红外光谱中观察到对应于两个顺式-Cl配体的ν(PtCl)振动(约335和320 cm -1)。研究了顺式-二氯双-(茶碱)铂(II)与小牛胸腺DNA相互作用的程度。由水合的Pt II(theoph)2 -DNA相互作用产生的UV差异光谱在282和292 nm处显示条带,这归因于与铂结合引起的碱基部分电子分布的变化以及碱基堆积的损失。用铂络合物处理的D
Monofunctional Pt
<sup>II</sup>
Complexes Based on 8‐Aminoquinoline: Synthesis and Pharmacological Characterization
for the preparation of new antiproliferative metallo-drugs. Here, we reported the synthesis and cytotoxicity evaluation of a series of platinum complexes using 8aminoquinoline and its chiral 5,6,7,8-tetrahydro-derivatives as chelating ligands. In the proposed complexes, a differently and opportunely alkylated imidazole was used to prepare the corresponding monofunctional platinum complexes. The preliminary