104 M−1. Complexes 1–8 were also tested for DNA nuclease activity against pUC19 plasmid DNA which showed that 6 and 7 had the best DNA binding and photonuclease activity; these results support their good protein binding and cleavage activity with binding constants ranging from 104 to 105 M−1. Finally, the in vitro antiproliferative activity of all complexes was assayed against the HeLa cell line. Some
八个碱
金属离子介导的双
氧钒(V),[V V O 2 L 1-6 } A(H 2 O)n ] ∝,A = Li +,Na +,K +和Cs +的配合物,含三齿描述了通过ONO供体原子配位的芳酰
肼磺酸酯配体。通过元素分析,IR,UV-Vis和NMR光谱法成功地表征了所有合成的
配体和
金属配合物。的X射线晶体学调查3,5-7示出的存在扭曲NO 4对于LVO协调的几何形状2 -在每种情况下,与变化的μ-
氧桥和/或μ-AQUA与该碱
金属离子的大小相关有趣的变化桥接:与小栗+,没有桥接-O被发现而是四个离子聚集体被发现与Na +,链为K +,最后为Cs +层。两个(5)或三维(3,6和7)架构通过
氢键固结。发现dioxidovanadium(V)配合物表现出DNA结合活性,这是由于它们通过凹槽结合模式与CT-DNA相互作用,结合常数范围为10。3至10 4 M -1。还测试了复合物1–8对pUC19质