dinuclear transition-metal complexes to bind two neighboring phosphate diester groups of DNA. The two metal ions are positioned at the distance of two neighboring phosphate diesters in DNA of 6–7 Å by a 1,8-naphthalenediol backbone. Two sterically demanding dipicolylamine pendant arms in the 2 and 7 positions stabilize coordination of the metal ions and prevent coordination to the less exposed nucleobases
我们合理设计了一个双核过渡金属配合物家族,以结合两个相邻的DNA磷酸二酯基团。两种金属离子通过1,8-萘二醇主链位于6-7ÅDNA中相邻的两个磷酸二酯之间。位于2和7位的两个空间要求苛刻的二聚二烯丙基胺侧链可稳定金属离子的配位,并防止与暴露程度较低的DNA核碱基的配位。尽管双核Ni II 2和Cu II 2与DNA结合,抑制DNA合成并优先杀死人类癌细胞而不是快速增殖的人类干细胞,DNA的结合方式难以捉摸。在这里,我们通过具有双苯并咪唑胺侧链的新型双核Ni II 2络合物证明了该双核络合物家族的主要磷酸二酯结合能力。配位的磷酸二酯中氧原子的距离为6.5,证实了其初始设计以及与DNA骨架两个相邻磷酸二酯的结合能力。而且,通过磷酸二酯容易地交换配位的乙酸酯表明与磷酸二酯的优先结合。
A Series of Dinuclear Complexes with a Flexible Naphthalene-Spacer and MOM-Cleavage by Pre-coordinated Lewis Acids
The synthesis, spectroscopic, electrochemical, magnetic, and structuralcharacterization of the dinuclear series of complexes [(MOM2tomMe)MIICl2}2] (MII = ZnII, CuII, NiII, CoII, FeII) and, for comparison, the structure of the complex [(MOM2tom)ZnIICl2}2] are presented. The metal ions are five-coordinate in N3Cl2 environments. The coordination polyhedra are evaluated in the solid-state by single-crystal
Neutral Bimetallic Transition Metal Phenoxyiminato Catalysts and Related Polymerization Methods
申请人:Marks Tobin J.
公开号:US20130041169A1
公开(公告)日:2013-02-14
A catalyst composition comprising a neutral bimetallic diphenoxydiiminate complex of group 10 metals or Ni, Pd or Pt is disclosed. The compositions can be used for the preparation of homo- and co-polymers of olefinic monomer compounds.
We describe the development of dinuclear metallic ligands to target specific HIV RNA structures. Two series of dipyridinyl-N bridged dinuclear metal complexes were synthesized in moderate to good yields and their binding activities toward TAR and RRE RNA were studied both experimentally and theoretically. The docking calculation elucidated some structure features in dimetallic complexes that can affect TAR RNA-binding properties. (C) 2018 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
Rodriguez, Brandon A.; Delferro, Massimiliano; Marks, Tobin J., Journal of the American Chemical Society, 2009, vol. 131, p. 5902 - 5919
作者:Rodriguez, Brandon A.、Delferro, Massimiliano、Marks, Tobin J.