Abstract
A series of 2,3-dihydro- and 5-chloro-2,3-dihydro-naphtho-[1,2-b]furan-2-carboxylic acid N-(substitutedphenyl)amide analogs (1a–k and 2a–i) were designed and synthesized for developing novel naphthofuran scaffolds as anticancer agents and inhibitors of NF-κB activity. Compound 1d, which had a 4′-chloro group on the N-phenyl ring, exhibited inhibitory activity of NF-κB. Compound 2g, which had a 5′-chloro group on the naphthofuran ring and a 3′,5′-bistrifluoromethane group on the N-phenyl ring, had the best NF-κB inhibitory activity. In addition, the novel analogs exhibited potent cytotoxicity at low concentrations against HCT-116, NCI-H23, and PC-3 cell lines. The two electron-withdrawing groups, especially at the 3′,5′-position on the N-phenyl ring, increased anticancer activity and NF-κB inhibitory activity. However, only 5-chloro-2,3-dihydronaphtho[1,2-b]furan-2-carboxylic N-(3′,5′-bis(trifluoromethyl)phenyl)amide (2g) exhibited both outstanding cytotoxicity and NF-κB inhibitory activities. This novel lead scaffold may be helpful for investigation of new anticancer agents by inactivation of NF-κB.
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Acknowledgments
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2013R1A1A2009381), Medical Research Center Program (2008-0,062,275) and the research grant of Chungbuk National University in 2014.
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Choi, M., Jo, H., Kim, D. et al. Design and synthesis of 2,3-dihydro- and 5-chloro-2,3-dihydro-naphtho-[1,2-b]furan-2-carboxylic acid N-(substitutedphenyl)amide analogs and their biological activities as inhibitors of NF-κB activity and anticancer agents. Arch. Pharm. Res. 39, 618–630 (2016). https://doi.org/10.1007/s12272-016-0737-5
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DOI: https://doi.org/10.1007/s12272-016-0737-5