Bis-picolinamide Ruthenium(III) Dihalide Complexes: Dichloride-to-Diiodide Exchange Generates Single<i>trans</i>Isomers with High Potency and Cancer Cell Selectivity
作者:Aida M. Basri、Rianne M. Lord、Simon J. Allison、Andrea Rodríguez-Bárzano、Stephanie J. Lucas、Felix D. Janeway、Helena J. Shepherd、Christopher M. Pask、Roger M. Phillips、Patrick C. McGowan
DOI:10.1002/chem.201605960
日期:2017.5.5
A library of new bis‐picolinamide ruthenium(III) dihalide complexes of the type [RuX2L2] (X=Cl or I, L=picolinamide) have been synthesised and characterised. The complexes exhibit different picolinamide ligand binding modes, whereby one ligand is bound (N,N) and the other bound (N,O). Structural studies revealed a mixture of cis and trans isomers for the [RuCl2L2] complexes but upon a halide exchange
已合成并表征了[RuX 2 L 2 ]类型(X = Cl或I,L = picolinamide)的新的双吡啶甲酸钌(III)二卤化物配合物的文库。所述配合物表现出不同的吡啶甲酰胺配体结合模式,其中一个配体被结合(N,N),而另一个被结合(N,O)。结构研究表明[RuCl 2 L 2 ]配合物是顺式和反式异构体的混合物,但是在卤化物交换反应中生成[RuI 2 L 2 ]时,只有单反式检测到异构体。观察到了对人类癌细胞系的高细胞毒性活性,某些复合物的功效类似于或优于顺铂。向[RuI 2 L 2 ]的转化将对癌细胞系的活性大大提高了十二倍以上。[RuI 2 L 2]复合物显示出对A2780cis(对顺铂耐药的人卵巢癌)细胞系的有效活性,其效力比顺铂高四倍以上。观察到了针对常氧和低氧癌细胞的等毒活性,这表明以相同的效率清除实体瘤的低氧和好氧部分的潜力。还测试了所选复合物针对非癌性ARPE-19细胞的活性。发现[RuI
Rhodium, Iridium, and Ruthenium Half-Sandwich Picolinamide Complexes as Anticancer Agents
作者:Zahra Almodares、Stephanie J. Lucas、Benjamin D. Crossley、Aida M. Basri、Christopher M. Pask、Andrew J. Hebden、Roger M. Phillips、Patrick C. McGowan
DOI:10.1021/ic401529u
日期:2014.1.21
Novel rhodium, iridium, and ruthenium half-sandwichcomplexes containing (N,N)-bound picolinamide ligands have been prepared for use as anticancer agents. The complexes show promising cytotoxicities, with the presence, position, and number of halides having a significant effect on the corresponding IC50 values. One ruthenium complex was found to be more cytotoxic than cisplatin on HT-29 and MCF-7 cells
The present application provides picolinamide compounds that can be used as allosteric positron emission tomography (“PET”) imaging probes. Methods of using these compounds for treating a neurodegenerative disease are also provided.
Copper-catalyzed ortho-halogenation of protected anilines
作者:Beatriz Urones、Ángel Manu Martínez、Nuria Rodríguez、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c3cc47174h
日期:——
A practical Cu-catalyzed direct ortho-halogenation of anilines under aerobic conditions has been developed. The reaction shows typically excellent mono-substitution selectivity, high ortho-regiocontrol and large functional group tolerance.
A simple protocol for the synthesis of 2‐(trifluoromethyl)aniline derivatives through a coordinatingactivation strategy was developed. The reaction showed good reactivity and gave the target products in moderate to good yields. Pleasingly, the directing group could be recovered in excellent yield. Furthermore, this strategy allowed efficient access to the synthesis of floctafenine. A single‐electron‐transfer