<i>trans</i>-Platinum(<scp>iv</scp>) pro-drugs that exhibit unusual resistance to reduction by endogenous reductants and blood serum but are rapidly activated inside cells:<sup>1</sup>H NMR and XANES spectroscopy study
作者:Catherine K. J. Chen、Peter Kappen、Dan Gibson、Trevor W. Hambley
DOI:10.1039/d0dt01622e
日期:——
complexes that they do to cis-diam(m)ineplatinum complexes. The cis complexes exhibit resistance to reduction by L-ascorbate and human blood serum, but are readily reduced inside cancer cells. Studies of reduction monitored by 1H NMR revealed that oxidation of trans-diammineplatinum(II) complexes does not always result in significant stabilisation, but the complexes trans, trans, trans-[Pt(OAc)4(NH3)2]
最近的结果证实,保护跨铂不受癌细胞通路反应的影响,从而大大增强了它们的活性,表明这种复合物的潜力比以前认为的要大。在这项研究中,我们研究了铂(IV)氧化态和四羧酸盐配位球的使用,以确定这些特征是否能赋予反式-diammineplatinum络合物与顺式-dimm(m)ineplatinum络合物相同的稳定性。所述顺式配合物表现出对通过还原性大号-ascorbate和人血清,但癌细胞内部容易降低。减量研究由1监控1 H NMR表明,反式-diammineplatinum(II)配合物的氧化并不总是导致稳定,但是该配合物反式,反式,反式-[Pt(OAc)4(NH 3)2 ](OAc =乙酸盐)和反式,反式,反式-[Pt(OPr)2(OAc)2(NH 3)2 ](OPr =丙酸酯)在十倍过量的L-存在下分别表现出33 h和5.9天的二级半衰期。抗坏血酸。血液模型减少的XANES光谱研究表明,反式