First organometallic inhibitors for human thymidine kinase: synthesis and in vitro evaluation of rhenium(I)- and technetium(I)-tricarbonyl complexes of thymidine
作者:R. Schibli、M. Netter、L. Scapozza、M. Birringer、P. Schelling、C. Dumas、J. Schoch、P.A. Schubiger
DOI:10.1016/s0022-328x(02)02100-9
日期:2003.2
unspecific interaction with other functional groups of the pharmacophor. The organometallic rhenium–nucleoside complexes have been tested in vitro for competitive inhibition of human cytosolic thymidine kinase (hTK1) and herpes simplex virus thymidine kinase type 1 (HSV1-TK). In case of hTK1 it could be observed, that the inhibition capacity of the complexes improved with increasing spacer length.
已经合成了六种5'-氨基胸苷的5'-羧酰胺衍生物,它们具有各种长度的烷基链和三齿亚氨基二乙酸基螯合体系。胸苷类似物已与前体fac- [M(H 2 O)3(CO)3 ] +(M = 99m Tc,Re)在水性介质中反应,以良好的产率形成水溶性和稳定的有机金属配合物。1个1 H-NMR和IR光谱分析在所有情况下均仅通过三齿螯合物证实了金属-三羰基片段的三齿络合物,并且没有与药效基团的其他官能团发生非特异性相互作用。已对有机金属rh-核苷复合物进行了体外竞争性抑制人胞浆胸苷激酶(hTK1)和1型单纯疱疹病毒胸苷激酶(HSV1-TK)的测试。在hTK1的情况下,可以观察到,复合物的抑制能力随着间隔物长度的增加而提高。另一方面,所有六个复合物均未显示或仅轻微抑制了HSV1-TK。制备了相应的放射性tech 99m配合物,并在生理磷酸盐缓冲液和人血清白蛋白中于37°C进行了24小时的稳定性挑战。