Abstract
New series of pyrido[2,3-d]pyrimidines such as; 5-(4-aryl-5-sulfanyl-4H-[1,2,4]triazol-3-yl) 1H,3H,8H-pyrido[2,3-d]pyrimidine-2,4,7-triones 6, 7; S-[3-(2,4,7-trioxo-1,2,3,4,7,8-hexahydropyrido[2,3-d]pyrimidin-5-yl)-4-(4-substituted phenyl)-4H-[1,2,4]triazol-5-yl]-2-(4-phenylpiperazin-1-yl)ethanethioates 10, 11; 2,4,7-trioxo-N′-[(4-substituted piperazin-1-yl)acetyl]-1,2,3,4,7,8-hexahydropyrido[2,3-d]pyrimidine-5-carbohydrazides 13–16 and N′-arylidene-2,4,7-trioxo-1,2,3,4,7,8-hexahydropyrido[2,3-d]pyrimidine-5-carbohydrazides 17–19 was synthesized through the reaction of the key intermediate 2,4,7-trioxo-1,2,3,4,7,8-hexahydropyrido[2,3-d]pyrimidine-5-carbohydrazide 3 with different reagents. The structures of the newly synthesized compounds were elucidated through microanalysis, IR, 1H NMR, 13C NMR, and mass spectroscopy. These compounds have been subjected to in vitro antitumor evaluation by bleomycin-dependant DNA damage assay. The most active antitumor compound 6 was selected for further in vivo evaluation of antineoplastic activity against Ehrlich ascites carcinoma in mice. It was observed that our target compound has a potent antitumor activity.
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Acknowledgments
We would like to thank Prof. Farid A. Badria, Professor of Pharmacognosy, Faculty of Pharmacy, Mansoura University, for his cooperation in performing the biologic screening.
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Gineinah, M.M., Nasr, M.N.A., Badr, S.M.I. et al. Synthesis and antitumor activity of new pyrido[2,3-d]pyrimidine derivatives. Med Chem Res 22, 3943–3952 (2013). https://doi.org/10.1007/s00044-012-0396-0
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DOI: https://doi.org/10.1007/s00044-012-0396-0