Pt II , Pd II and Au III complexes with a thiosemicarbazone derived from diacethylmonooxime: Structural analysis, trypanocidal activity, cytotoxicity and first insight into the antiparasitic mechanism of action
作者:Ana C.R. Gonçalves、Zumira A. Carneiro、Carolina G. Oliveira、Amanda Danuello、Wendell Guerra、Ronaldo J. Oliveira、Francis B. Ferreira、Laudimir L.W. Veloso-Silva、Fernanda A.H. Batista、Júlio C. Borges、Sérgio de Albuquerque、Victor M. Deflon、Pedro I.S. Maia
DOI:10.1016/j.ejmech.2017.10.013
日期:2017.12
in vitro trypanocidal activity and that the cytotoxicity is dependent on both the metal center and coligands. Within the studied series, the AuIII complex showed the greatest potential, being not the most active but the most selective compound with a similar selectivity index to that of the standard drug benznidazole. In order to get a preliminary insight into the mechanism of action of these compounds
的组合物,新的配合物[MX(HL1)](M =铂II,钯II,X =氯-或I - )和[MX(L1)](M =金III,X =氯- ; M =铂II, Pd II,X = PPh 3)已使用含有额外肟结合位点的潜在三齿硫代半脲(H 2 L1)合成。除其他分析方法外,所有七个络合物均已通过单晶X射线衍射法进行了结构表征。讨论了有趣的结构特征,例如卤化物配体对氢键的影响以及膦衍生物的超分子结构的形成。这在体外的游离配位体H的杀锥虫活性2 L1和其对两个细胞外锥鞭毛体和胞内无鞭毛体衍生物(IC 50try / AMA)的形式克氏锥虫(Tulahuen紫胶-Z菌株)和细胞毒性上的LLC-MK2细胞系进行评估。结果表明,硫半脲配体H 2 L1与Pt II,Pd II和Au III金属中心的络合作用增强了体外锥虫杀伤活性,并且细胞毒性取决于金属中心和大肠菌素。在研究的系列中,Au III该复合物显示出