Endocyclic versus exocyclic N-coordination to platinum(II) of some nitro-9-[(2-dialkylaminoethyl)amino]acridines
作者:Luciana Maresca、Concetta Pacifico、Maria C Pappadopoli、Giovanni Natile
DOI:10.1016/s0020-1693(00)00100-6
日期:2000.6
antitumor drugs 1-nitro-9-[(2-dialkylaminoethyl)amino]acridine (alkyl=Me, A 1 ; Et, A 2 ) or the inactive analogs 3-nitro-9-[(2-dialkylaminoethyl)amino]acridines (alkyl=Me, A 3 ; Et, A 4 ) and three different platinum(II) substrates have been investigated in chloroform and acetone solutions and found to be dependent upon the charge of the metal complex and the position of the tautomeric equilibrium (amino and
摘要抗肿瘤药物1-硝基-9-[(2-二烷基氨基乙基)氨基] ac啶(烷基= Me,A 1; Et,A 2)或非活性类似物3-nitro-9-[(在氯仿和丙酮溶液中研究了2-二烷基氨基乙基)氨基] r啶(烷基= Me,A 3; Et,A 4)和三种不同的铂(II)底物,发现它们依赖于金属络合物和金属的电荷游离a啶中互变异构平衡的位置(氨基和亚氨基形式)。阴离子([Pt(η2 -C 2 H 4)Cl 3]-)和中性([PtI 2(DMSO)] 2)铂底物与占主导地位的互变异构体氨基或亚氨基反应,生成环内和环外N -键合的衍生物。带正电的底物([Pt(H 2 O)(Me 5 dien)] 2+和[Pt(H 2 O)(dien)] 2+)仅与环外氨基氮配位,并且这种配位模式也稳定了亚氨基形式对于3-硝基a啶,在两种溶剂中均以纯氨基互变异构体形式存在。对于二铂络合物,在室温下观察到游离和配位a啶之间的快速交换。