Aminoalcohols incorporating a piperazine ring: Synthesis, complexation of a hexadentate ligand and DNA cleavage capability of copper(II) complexes
作者:Brendan L. Griggs、Geoffrey A. Lawrance、Marcel Maeder、Mark J. Robertson、Peter Turner
DOI:10.1016/j.ica.2006.12.025
日期:2007.5
(Cu–O 2.415(3) A). The piperazine ring adopts a ‘butterfly wing’ geometry, whereas the two cyclohexane rings are in chair conformations. Significant bond angle distortions occur around the copper, exacerbated by the axial Jahn–Teller bond length distortion. The ability of the copper(II) complexes of the aminoalcohols to promote DNA cleavage was examined. Complexes of 2, 3 and 5 are effectively inactive
摘要通过(2'-羟基环己基)哌嗪(1),双(2'-羟基环己基)-哌嗪(2)的合成和表征,说明了环氧化物与多胺包括哌嗪环的开环反应合成氨基醇配体的便利性。 ),4-((2''-羟基环己基)-2'-氨基乙基)}哌嗪(3),1-(2''-羟基环己基)-4-(2''-羟基环己基)-2'-氨基乙基)}哌嗪( 4),以及描述的1,4-双[(2“-羟基环己基)-3'-氨基丙基]哌嗪(5),以及类似物4的类似物,其中单个–CH2-CH2-烷基链取代了哌嗪环, 1,5-双[(2'-羟基环己基)胺] -3-氮杂戊烷(6)。通过制备其铜(II)配合物并随后进行X射线晶体结构分析,确定了5作为六齿配体的生存能力。复杂的[Cu(5)](ClO4)2阳离子处于扭曲的八面体环境中,四个氮供体在一个近似平面中也包含铜(Cu–Ntert 2.058(4)A; Cu–Nsec 2.072(4)A )和两个醇基占据带有细长键的轴向位点(Cu-O