Self-assembly of novel molecular complexes of 1,10-phenanthroline and 5-amino-1,10-phenanthroline and evaluation of their in vitro antitumour activity |
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Authors: | Kaloyanov Nikolay Alexandrova Radostina Wesselinova Diana W Mayer-Figge Heike Sheldrick William S Dimitrov Georgi D |
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Affiliation: | Department of Organic Chemistry, University of Chemical Technology and Metallurgy, 8, Saint Kliment Ohridski Blvd., Sofia 1756, Bulgaria. nikolaykaloyanov@yahoo.com |
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Abstract: | Novel molecular complexes of 1,10-phenanthroline (phen) and 5-amino-1,10-phenanthroline (5-NH2-phen) [(5-NH2-phen)2(phen) (H2O)3 (1), (phen)2(imidazole) (H+) (BF4-) (2), (phen)2(benzimidazole) (H+) (BF4-) (3), (5-NH2-phen)4(H2O)3 (4), and (phen)3 (indole) (H+) (BF4-) (5)] were synthesized via self-assembly processes and their in vitro anticancer activity was investigated. The structures of the compounds were confirmed by UV, FTIR, CIMS(CH4) and elemental analysis. The crystal structure of 2 was determined by X-ray diffraction. Cytotoxicity of the substances was measured using the cultivated human tumour cell lines HepG2, HEp-2, and 8-MB-GA. The tested substances showed different activity depending on the cell line and amount used. Substances 2 and 3 were not toxic to the non-tumour cells (Lep-3), but significantly toxic to all tumour ones. This is not the case with compounds 4 and 5, which are non-toxic towards carcinogenic cell lines, but even stimulate both HepG2 and HEp-2. |
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