In this study, the antibacterial, cytotoxic and antiproliferative activities of novel thiosemicarbazide derivatives were assessed. Our results demonstrated that some of the novel compounds possess good antibacterial properties against Staphylococcus epidermidis, Streptococcus mutans and Streptococcus sanguinis and are only slightly cytotoxic; thus, they exhibit an excellent therapeutic index, which
Tautomerism is one of the most important phenomena to consider when designing biologically active molecules. In this work, we use NMR spectroscopy, IR, and X-ray analysis as well as quantum-chemical calculations in the gas phase and in a solvent to studytautomerism of 1- (2-, 3- and 4-pyridinecarbonyl)-4-substituted thiosemicarbazide derivatives. The tautomer containing both carbonyl and thione groups
互变异构现象是设计生物活性分子时要考虑的最重要的现象之一。在这项工作中,我们使用核磁共振光谱、红外和 X 射线分析以及气相和溶剂中的量子化学计算来研究 1-(2-、3- 和 4-吡啶羰基)-4 的互变异构现象-取代的氨基硫脲衍生物。含有羰基和硫酮基团的互变异构体被证明是最稳定的。计算结果与核磁共振和红外光谱的实验数据以及 X 射线研究的结晶形式一致。获得的结果拓宽了氨基硫脲支架结构研究领域的知识,这将转化为对化合物与潜在分子靶标相互作用的理解。