The x-ray structure of cis-bis(cyclopropylamine)bis(1-methylthyminato-N3)-platinum(II) dihydrate, cis-(cpa)2Pt(1-MeT)2·2H2O, and chemistry related to ‘platinum thymine purple’
作者:Oliver Renn、Bernhard Lippert、Helmut Schöllhorn、Ulf Thewalt
DOI:10.1016/s0020-1693(00)83946-8
日期:1990.1
cross-link of two thymine bases of DNA by a cis-a2Pt(II) moiety. As shown by 1H NMR spectroscopy, 1 loses both cpa and 1-MeT ligands in acidic medium. Likewise, cis-(cpa)2PtCl2 undergoes solvolysis in aqueous solution with liberation of cpa. Starting with 1, dinuclear complexes of composition cis-[(cpa)2Pt(1-MeT)2Pt(NH3)2]2+ (2), cis-[(cpa)2Pt(1-MeT)2Pt(cpa)2]2+ (3) and cis-(cpa)2Pt(1-MeT2PtCl2 (4)
摘要报道了顺式-(cpa)2Pt(1-MeT)2·2H2O(1)的晶体结构,其中cpa =环丙胺和1-MeT = 1-甲基胸腺嘧啶阴离子(C6H7N2O2),在单斜晶系空间中结晶1 P21 / c组,a = 10.645(2),b = 14.878(3),c = 15.535(3)A,β= 106.44(3)/ dg,V = 2359.8 A3,Z = 4 1-MeT环穿过N3,每个环带有两个1-MeT环。因此,可以认为1通过顺式-a2Pt(II)部分假设的两个DNA胸腺嘧啶碱基的交联的现实模型。如1 H NMR光谱所示,1在酸性介质中会失去cpa和1-MeT配体。同样,顺式-(cpa)2PtCl2在水溶液中发生溶剂分解并释放出cpa。从1开始,组成为顺式[[cpa)2Pt(1-MeT)2Pt(NH3)2] 2+(2)的双核复合物,