Synthesis, characterization and in vitro antitumor activity of a series of 3,5-substituted 1,2,4-oxadiazoles
DOI:
https://doi.org/10.14808/sci.plena.2020.117202Keywords:
oxadiazole, cytotoxicity, antitumorAbstract
In this work, the synthesis, structural characterization and in vitro antitumor activity of 1,2,4-oxadiazoles is described. Arylamidoximes, starting products of interest, were obtained in good yields (70-92%). On the other hand, 3-aryl-(1,2,4-oxadiazol-5-yl)-propan-2-one (5a-c) were obtained from ethyl acetoacetate with arylamidoxime by heating for 4 hours in yield of 74-88%. Then compounds 3a-c were subjected to a reduction reaction with sodium borohydride to provide 3-aryl-(1,2,4 -oxadiazol-5-yl)-propan-2-ol (6a-c) in yield ranging from 75 to 88%. Compounds containing the oxadiazole nucleus of the series (5a-c) and (6a-c) were subjected to biological testing to verify their in vitro cytoxicity against tumor cells - HT29 (colon carcinoma - human), HL60 (promyelocytic leukemia) and NCI H-292 (lung cancer - human). The compounds (5a-c) and (6a-c) had their antitumor activities tested in vitro and 5a/b showed moderate activity and 5c good activity against HL60 cells. On the other hand, compounds 6a-c showed no activity.
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Copyright (c) 2020 João Rufino de Freitas Filho, Juliano Carlo Rufino Freitas, Jucleiton José Rufino de Freitas, Gardênia Carmem Gadelha Militão, Teresinha Gonçalves da Silva, Edilma Elayne da Silva, Mauricélia Maria de Souza Mata, Bianca Micaela Macário Gonçalves Acioli
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