Contrasting Anticancer Activity of Half-Sandwich Iridium(III) Complexes Bearing Functionally Diverse 2-Phenylpyridine Ligands
作者:Adam J. Millett、Abraha Habtemariam、Isolda Romero-Canelón、Guy J. Clarkson、Peter J. Sadler
DOI:10.1021/acs.organomet.5b00097
日期:2015.6.8
[(η5-Cp*)Ir(2-(2′-fluorophenyl)pyridine)Cl] (1) and [(η5-Cp*)Ir(2-(4′-fluorophenyl)pyridine)Cl] (2) exhibit the expected “piano-stool” configuration. DFT calculations showed that substituents caused only localized effects on the electrostatic potential surface of the chelating 2-PhPy ligand of the complexes. Hydrolysis of all complexes is rapid, but readily reversed by addition of NaCl. The complexes show preferential
我们报告了 [(η 5 -Cp*)Ir(2-(R'-苯基)-R-吡啶)Cl]类型的 15 种铱 (III) 半夹心配合物的合成、表征和抗增殖活性在 2-苯基吡啶 (2-PhPy) 螯合配体上不同位置的给电子 (-OH, -CH 2 OH, -CH 3 ) 或吸电子 (-F, -CHO, -NO 2 ) 基团产生六组结构异构体。[(η 5 -Cp*)Ir(2-(2'-氟苯基)吡啶)Cl] ( 1 ) 和 [(η 5 -Cp*)Ir(2-(4'-氟苯基) )吡啶)Cl] ( 2) 表现出预期的“钢琴凳”配置。DFT 计算表明,取代基仅对配合物的螯合 2-PhPy 配体的静电势表面产生局部影响。所有复合物的水解都很快,但很容易通过添加 NaCl 逆转。复合物显示出优先结合 9-乙基鸟嘌呤而不是 9-甲基腺嘌呤,并且是将 NADH 氧化为 NAD + 的活性催化剂。A2780 卵巢癌、MCF-7 乳腺癌、A549