Preparation and antioxidant/pro-oxidant activities of 3-monosubstituted 5-hydroxyoxindole derivatives

Daisuke Yasuda, Kyoko Takahashi, Tomoyuki Ohe, Shigeo Nakamura, Tadahiko Mashino

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Antioxidant treatments have been expected to be a novel thera-peutics for various oxidative stress-mediated disorders. Our previous study revealed that 5-hydroxyoxindole and its 3-phenacyl-3-hydroxy derivatives showed excellent antioxidant activities such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and lipid-peroxidation inhibitory activity. However, the DPPH radical scavenging activity of the 3,3-disubstituted derivatives was lower than that of the original 5-hydroxyoxindole. In the present study, we synthesized novel 3-monosubstituted 5-hydroxyoxindole derivatives that exhibited stronger DPPH radical scavenging activities and lipid peroxidation-inhibitory activities than the 3,3-disubstituted 5-hydroxyoxindoles. Moreover, the 3-monosubsti-tuted 5-hydroxyoxindole derivatives showed neither an iron-mediated pro-oxidant effect nor a remarkable cytotoxicity against HL-60 cell lines except some of the highly lipophilic compounds. These results indicate that 3-monosubstituted 5-hydroxyoxindoles can be used as a promising antioxidant scaffold for drug discovery.

Original languageEnglish
Pages (from-to)165-173
Number of pages9
JournalCleft Palate-Craniofacial Journal
Volume59
Issue number6
DOIs
Publication statusPublished - 2016 Nov 1

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Keywords

  • 5-hydroxyoxindole
  • Antioxidant
  • Lipid peroxidation
  • Pro-oxidant effect
  • Radical scavenging activity

ASJC Scopus subject areas

  • Oral Surgery
  • Otorhinolaryngology

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