Synthesis, anti-inflammatory activity, and in vitro antitumor effect of a novel class of cyclooxygenase inhibitors: 4-(aryloyl)phenyl methyl sulfones

Salvatore Plescia, Demetrio Raffa, Maria Grazia Cusimano, Joan Basset, Maria Dolors Pujol, Glòria Rosell, Youssef Harrak, Ramon Pouplana, Giovanni Casula

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118 Citations (Scopus)

Abstract

Following our previous research on anti-inflammatory drugs (NSAIDs), we report on the design and synthesis of 4-(aryloyl)phenyl methyl sulfones. These substances were characterized for their capacity to inhibit cyclooxygenase (COX-1 and COX-2) isoenzymes. Molecular modeling studies showed that the methylsulfone group of these compounds was inserted deep in the pocket of the human COX-2 binding site, in an orientation that precludes hydrogen bonding with Arg120, Ser353, and Tyr355 through their oxygen atoms. The N-arylindole 33 was the most potent inhibitor of COX-2 and also the most selective (COX-1/COX-2 IC50 ratio was 262). The indole derivative 33 was further tested in vivo for its anti-inflammatory activity in rats. This compound showed greater inhibitory activity than ibuprofen. Other compounds (20, 26, 9, and 30) showed strong activity against carrageenan-induced inflammation. The later compounds showed a weak capacity to inhibit the proliferation of human cell lines K562, NCI-H460, and HT-29 in vitro.
Original languageEnglish
Pages (from-to)6560-6571
Number of pages12
JournalJournal of Medicinal Chemistry
Volume53
Publication statusPublished - 2010

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Drug Discovery

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