Synthesis Novel Fluorinated Cyclic Nanomeric Aza Crown Macrocyclic System Containing 1,2,4-triazine moiety and Ru-complex as Cyclin-dependent kinase 2 (CDK2) inhibitors of tumor cells (Protection of DNA Damage)-Part II.

Novel fluorinated 1,5-disubstituted-1,3,5-triazepine-6,7-dione (4) has been obtained from the interaction between 5,6-bis(4-fluorophenyl)-1,2,4-triazine-3-thiol (1) with 2,6-diaminopyridine 2 followed by ring closer reaction with diethyl oxalate. Also, Ru-complex 7 obtained by refluxing of compound 1 with 6-(4-fluorophenyl)-1,2,4-triazine-3,5-diamine (5) to produce compound 6, the later was reacted with RuCl₃.xH₂O to produce the target 7. Structures of the products deduced from their elemental analysis and spectral measurements. Compounds 3, 4, 6, and 7 were evaluated as CDK2 inhibitors of tumor cells; these compounds exhibited a potential activity against CDK2, where the IC₅₀ values were 4.5, 6.8, 4.0, and 5.0 µM respectively in comparison with Olomoucine standard (IC₅₀=5.0 µM). [ABSTRACT FROM AUTHOR]