[Pt(en)Cl2], whereas 2 was stable in water. The reaction of 1n with guanosine 5′-monophosphate (5′-GMP) gave a stable mixed-ligand complex [Pt([15N]en)MeCO-Met(1–)-S}(5′-GMP-N7)]+, and the reaction with guanylyl(3′-5′)guanosine (GpG) gave two different monofunctional adducts [Pt([15N]en)MeCO-Met(1–)-S}(GpG-N7)]+, due to platination of either 3′- or 5′-G, with a preferential formation of one over the other
[Pt(en)MeCO-Met- S)Cl] NO 3 1,[Pt(en)(MeCO-Met- S)2 ] [NO 3 ] 2 2(en =
乙烷-1,2-二胺,已制备MeCO-Met = N-乙酰基-L-甲
硫氨酸及其15 N类似物(1n和2n),并通过1 H,13 C和二维[ 1 H,15 N]光谱进行了表征。复合物1(在310 K下半衰期为3.9小时)的
水解速度比[Pt(en)Cl 2 ]慢,而2在
水中稳定。1n与
鸟苷5'-单
磷酸酯(5'-GMP)的反应产生了稳定的混合
配体络合物[Pt([ 15 N] en)MeCO-Met(1 –)- S }(5'-GMP- N 7)] +,与
鸟苷基(3'-5')
鸟苷(GpG)的反应产生了两个不同的单官能团加合物[Pt([ 15 N] en)MeCO-Met(1 –)- S }(GpG- N 7)] +,由于3'-G或5'-G的电镀反应,优先形成一