Synthesis and structure-activity relationships of hydroxylated and halogenated 2,4-diaryl benzofuro[3,2-b]pyridin-7-ols as selective topoisomerase IIα inhibitors

Til Bahadur Thapa Magar, Seung Hee Seo, Aarajana Shrestha, Jeong Ahn Kim, Surendra Kunwar, Ganesh Bist, Youngjoo Kwon, Eung Seok Lee

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2 Scopus citations

Abstract

The objective of this study was to discover potential topoisomerase (topo) targeting anticancer agents. Novel series of hydroxylated and halogenated (-F, -Cl, and -CF3) 2,4-diaryl benzofuro[3,2-b]pyridin-7-ols were systematically designed and synthesized by faster, economic, and environmentally friendly l-proline catalyzed and microwave-assisted one pot reaction method. The synthesized compounds were assessed for topo I and IIα inhibitory and anti-proliferative activities. The in vitro evaluation displayed that most of the compounds have selective topo IIα inhibitory activity as well as selectivity towards T47D human cancer cell line. Structure-activity relationship study suggested that the introduction of additional hydroxyl functionality at 7-positon of benzofuro[3,2-b]pyridine skeleton is crucial for selective topo IIα inhibitory activity. Placement of phenolic moiety on the 4-position of the tricyclic system imparts better topo IIα inhibitory and anti-proliferative activity.

Original languageEnglish
Article number104884
JournalBioorganic Chemistry
Volume111
DOIs
StatePublished - Jun 2021

Keywords

  • Anti-proliferative activity
  • Benzofuro[3,2-b]pyridin-7-ol
  • Halogen moiety
  • Hydroxyl moiety
  • Structure-activity relationship
  • Topoisomerase inhibition

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