Self-Assembly of Discrete RuII8 Molecular Cages and Their in Vitro Anticancer Activity

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• 作者：Aderonke Ajibola Adeyemo ; Abhijith Shettar ; Imtiyaz Ahmad Bhat ; Paturu Kondaiah ; Partha Sarathi Mukherjee
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：56
• 期：1
• 页码：608-617
• 全文大小：594K
• ISSN：1520-510X

文摘

Four new octanuclear Ru(II) cages (OC-1–OC-4) were synthesized from dinuclear p-cymene ruthenium(II) acceptors [Ru₂(μ–η⁴-C₂O₄)(CH₃OH)₂(η⁶-p-cymene)₂](O₃SCF₃)₂ (A₁), [Ru₂(μ–η⁴-C₆H₂O₄)(CH₃OH)₂(η⁶-p-cymene)₂](O₃SCF₃)₂ (A₂), [Ru₂(dhnq)(H₂O)₂(η⁶-p-cymene)₂](O₃SCF₃)₂ (A₃), and [Ru₂(dhtq)(H₂O)₂(η⁶-p-cymene)₂](O₃SCF₃)₂ (A₄) separately with a tetradentate pyridyl ligand (L₁) in methanol using coordination-driven self-assembly [L₁= N,N,N′,N′-tetra(pyridin-4-yl)benzene-1,4-diamine]. The octanuclear cages are fully characterized by various spectroscopic techniques including single-crystal X-ray diffraction analysis of OC-4. The self-assembled cages show strong in vitro anticancer activity against human lung adenocarcinoma A549 and human cervical cancer HeLa cell lines as observed from the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Of all the octanuclear cages, OC-3 exhibits remarkable anticancer activity against both cancer cell lines and is more active than that reported for cisplatin. The excellent anticancer activity of OC-3 and OC-4 highlights the importance of the synergistic effects of the spacer component of the dinuclear p-cymene Ru(II) acceptor clips.