Synthesis of novel pyrazolo[3,4-d]pyrimidinone derivatives as cytotoxic inhibitors
DOI:
https://doi.org/10.13171/mjc.2.4.2014.11.02.23Abstract
Various α-fonctionalized iminoethers 2 were easily prepared from ethyl 5-amino-3-substituted-1-phenyl-1H-pyrazole-4-carboxylate 1. The reaction of iminoethers 2 with ammonia afforded 3-substitued-1-phenyl-1H-pyrazolo[3,4-d] pyrimidin-4(5H)-ones 3 which were also synthesized by the addition of formamide to ethyl 5-amino-3-substituted-1-phenyl-1H-pyrazole-4-carboxylate 1. The 5-amino-3-substitued-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-ones 4 were obtained from hydrazonolysis of iminoethers 2. Otherwise, the condensation of these intermediates 2 with a series of some primary amines and hydroxylamine led respectively, to the corresponding 3,5-disubstitued-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-ones 5 and the 3-substitued-5-hydroxy-1-phenyl-1H-pyrazolo[3,4-d] pyrimidin-4-(5H)-ones 6. The synthesized compounds 1-6 were completely characterized by 1H NMR, 13C NMR, IR and HRMS. Some synthesized compounds were evaluated for their cytotoxic effect using the Human cervical adenocarcinoma Hela cell line.References
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