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Improvement of the Chemical Reactivity of Michael Acceptor of Ethacrynic Acid Correlates with Antiproliferative Activities.


ABSTRACT: The present study aims to report the design, synthesis, and biological activity of new ethacrynic acid (EA) analogs (6-10) obtained by the double modulation of the carboxylic acid moiety and the aromatic ring with the aim to increase the chemical reactivity of Michael acceptor of EA. All obtained compounds were characterized by 1H and 13C NMR, IR, and high-resolution mass spectrometry. The antiproliferative activity was evaluated in vitro using MMT test, in a first step, against HL60 cell line and in a second step, on a panel of human cancer cell lines such as HCT116, A549, MCF7, PC3, U87-MG, and SKOV3, and normal cell line MRC5 in comparison with positive control doxorubicin. Among all the tested compounds, the product 8 containing a propargyl and a hydroxyl groups, allowing an intramolecular hydrogen bond with the keto group of EA, exhibited a pronounced and selective activity in a nanomolar range against HL60, A549, PC3, and MCF7 with IC50 values of 15, 41.2, 68.7, and 61.5 nM, respectively. Compound 8 also showed a good selectivity index (SI) against HL60 and moderate SI against the other three human cancer cells (A549, PC3, and MCF7). The study of the structure-activity relationship showed that both modifications of the carboxylic group and the introduction of an intramolecular hydrogen bond are highly required to improve the antiproliferative activities. The molecular modeling studies of compound 8 revealed that it favorably binds to the glutathione S-transferase active site, which may explain its interesting anticancer activity. These new compounds have potential to be developed as novel therapeutic agents against various cancer types.

SUBMITTER: El Abbouchi A 

PROVIDER: S-EPMC9865193 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Improvement of the Chemical Reactivity of Michael Acceptor of Ethacrynic Acid Correlates with Antiproliferative Activities.

El Abbouchi Abdelmoula A   El Brahmi Nabil N   Hiebel Marie-Aude MA   Ghammaz Hamza H   El Fahime Elmostafa E   Bignon Jérôme J   Guillaumet Gérald G   Suzenet Franck F   El Kazzouli Saïd S  

Molecules (Basel, Switzerland) 20230116 2


The present study aims to report the design, synthesis, and biological activity of new ethacrynic acid (<b>EA</b>) analogs (<b>6-10</b>) obtained by the double modulation of the carboxylic acid moiety and the aromatic ring with the aim to increase the chemical reactivity of Michael acceptor of <b>EA</b>. All obtained compounds were characterized by <sup>1</sup>H and <sup>13</sup>C NMR, IR, and high-resolution mass spectrometry. The antiproliferative activity was evaluated in vitro using MMT test  ...[more]

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