Synthesis, Characterization, and Biological Activity of Hybrid Thiosemicarbazone–Alkylthiocarbamate Metal Complexes
作者:Sarah A. Andres、Kritika Bajaj、Nicholas S. Vishnosky、Megan A. Peterson、Mark S. Mashuta、Robert M. Buchanan、Paula J. Bates、Craig A. Grapperhaus
DOI:10.1021/acs.inorgchem.0c00182
日期:2020.4.6
compared with at least 20-fold less activity in IMR90 nonmalignant lung fibroblasts. In comparison, the nickel complexes were much less active and had little cancer-selectivity. Varying by ligand, the zinc complexes were less potent or had comparable activity compared to that of the corresponding copper complex. UV–visible spectroscopy indicated that zinc complex 10 was transmetalated in the presence
合成了一系列衍生自4-甲基-3-硫代氨基脲和肼基硫代甲酸O-烷基酯的杂化配体(H 2 L 1 - H 2 L 3),并进行了NMR表征。配体与铜(4 – 6),镍(7 – 9)和锌(10 – 12)螯合,并通过光谱学,电化学和单晶X射线晶体学表征。螯合金属在Cu II / I中显示出明显的阳极位移相对于其双(硫代半脲)类似物的还原电位约为160 mV。金属螯合物4 - 12用MTT测定法对潜在的抗癌活性进行评价,和选定的结果由产克隆和台盼蓝测定法确认。发现铜衍生物4和6具有有效的抗癌和抗癌作用,GI 50在A549肺腺癌细胞中,其值小于100 nM,而在IMR90非恶性肺成纤维细胞中,其活性至少低20倍。相比之下,镍络合物的活性低得多,对癌症的选择性也很小。与配体不同,与相应的铜配合物相比,锌配合物的效力较低或具有可比的活性。紫外可见光谱表明,在等摩尔铜存在下,锌络合物10被金属转移,而镍