Abstract
A series of 2-methyl, 4-methyl, and 2,4-dimethyl-8-quinolineselenolates of ruthenium, rhodium, osmium, and iridium has been synthesized and their cytotoxicity towards HT-1080 (human fibrosarcoma) and MG-22A (mouse hepatoma) tumor cells studied. It was found that all of the osmium complexes had a high cytotoxicity towards both cell lines. Their toxicity towards the normal mouse embryonic fibroblasts NIH-3T3 depends on the position and number of methyl groups in the quinoline ring and decreases in the order 2-Me > 4-Me > 2,4-Me2. The greatest selectivity in cytoxic activity is noted for iridium 4-methyl-8-quinolineselenolate and ruthenium 2-methyl-8-quinolineselenolate.
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