susceptibility to 1 and 2 was observed at 300 μM. Regarding complex 3, no cytotoxic activity was observed in the same conditions. The data presented here indicate that the tridentate ligand L is able to stabilize both oxidation states of cobalt (+ 3 and + 2). In addition, the cobalt(III) complex generates the low cytotoxic cobalt(II) species after reduction, which supports their use as as carrier prototypes
钴(III)配合物是在低氧条件下释放细胞毒性药物的理想系统。在这里,我们研究了含
钴载体原型对抗肿瘤前药的细胞毒性
叠氮化物释放的影响。此外,我们在提出的这些前药模型中研究了还原Co 3 + →Co 2 +后形成的物质。 三种新的配合物[Co III(L)(N 3)2 ] BF 4 (1),[Co II(L)(N 3)} 2 ](ClO 4)2 (2)和[Co II( L)Cl] PF 6 (3),L = [(双(1-甲基
咪唑-2-基)甲基)(2-(
吡啶基-2-基)乙基)胺],并通过几种光谱学,光谱学研究,电
化学和晶体学方法。反应性和光谱数据表明,复杂1能够释放Ñ 3 -在
抗坏血酸还原后或在环境光照射下,在
磷酸盐
水溶液(pH 6.2、7.0和7.4)和
乙腈溶液中进行还原。暴露24小时后,在常氧下对MCF-7(人乳腺腺癌),PC-3(人前列腺)和A-549(人肺腺癌上皮)
细胞系进行了化合物1