Cytotoxicity and structure–activity relationships of four α-N-heterocyclic thiosemicarbazone derivatives crystal structure of 2-acetylpyrazine thiosemicarbazone
作者:Ming-Xue Li、Chun-Ling Chen、Chun-Sheng Ling、Jing Zhou、Bian-Sheng Ji、Yan-Juan Wu、Jing-Yang Niu
DOI:10.1016/j.bmcl.2009.03.135
日期:2009.5
A series of thiosemicarbazone ligands, HL1 (2-acetylpyrazine thiosemicarbazone), HL2 (2-acetylpyrazine N(4)-methylthiosemicarbazone), HL3 (2-benzoylpyridine thiosemicarbazone) and HL4 (2-benzoylpyridine N(4)-methylthiosemicarbazone), have been synthesized. The crystal structure of HL1 has been determined by single-crystal X-ray diffraction. Hydrogen bonds link the different components to stabilize
一系列缩氨基硫脲配位体,HL 1(2- acetylpyrazine缩氨基硫脲),HL 2(2- acetylpyrazine Ñ(4)-methylthiosemicarbazone),HL 3(2-苯甲酰基吡啶缩氨基硫脲)和HL 4(2-苯甲酰基吡啶Ñ(4)-methylthiosemicarbazone ),已经合成。HL 1的晶体结构通过单晶X射线衍射确定。氢键连接不同的组分以稳定晶体结构。测试了四个配体的抗肿瘤活性对K562白细胞增多症和BEL7402肝癌细胞系的抗肿瘤活性。所有的硫半脲都显示出显着的抗肿瘤活性。配体上的不同取代基显示出不同水平的抗肿瘤活性。通过与研究的其他硫代半碳素类物质进行比较,在硫代半碳素带N(4)位置与2-苯甲酰基吡啶一起取代的HL 4是最活跃的硫代半碳素配体, 在K562白细胞增多症细胞系中IC 50 = 0.002μm,在BEL7402中为0.138μm肝癌细胞系分别。