Topoisomerase IIα inhibitory and antiproliferative activity of dihydroxylated 2,6-diphenyl-4-fluorophenylpyridines: Design, synthesis, and structure-activity relationships

Surendra Kunwar, Soo Yeon Hwang, Pramila Katila, Tara Man Kadayat, Ah Reum Jung, Youngjoo Kwon, Eung Seok Lee

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A new series of fifty-four 2-phenol-4-aryl-6-hydroxyphenylpyridines containing fluorophenyl, trifluoromethylphenyl, and trifluoromethoxy phenyl groups were synthesized and tested for topoisomerase IIα inhibitory and antiproliferative activity against different cancer cell lines in an attempt to look into topoisomerase IIα-targeted prospective anticancer agents to counter the limitations of available treatment options. When compared to positive controls, several compounds 11–12, 37, 50, and 51 showed high antiproliferative activity, while several 4-fluorophenyl substituted compounds 13–14 and 18 showed strong topoisomerase IIα inhibition. Surprisingly, most of the compounds had a significant antiproliferative effect on the HCT15 colorectal adenocarcinoma and T47D breast cancer cell lines. Moreover, compound 12 with para-fluorophenyl at the 4-position and meta-phenolic groups at the 2- and 6-positions inhibited proliferating HeLa cervix adenocarcinoma cells with an IC50 value of 1.28 μM. Based on biological results, the structure–activity relationships of the synthesized derivatives emphasized the significance of 4-trifluoromethoxyphenyl groups for strong antiproliferative activity and 4-fluorophenyl groups for strong topo IIα inhibition. Furthermore, meta- and para-phenolic groups at the 2- and 4-positions are favorable for strong topo IIα inhibitory and antiproliferative activity. The research findings provide insight into the effect of different fluorine functionalities in the discovery of novel topoisomerase IIα-targeted anticancer agents.

Original languageEnglish
Article number128606
JournalBioorganic and Medicinal Chemistry Letters
Volume60
DOIs
StatePublished - 15 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • 2,4,6-Triphenylpyridines
  • Anticancer agents
  • Antiproliferative activity
  • Fluorine functionalities
  • Hydroxyl group
  • Structure-activity relationship
  • Topoisomerase IIα inhibition

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