Primaquine-NSAID twin drugs: Synthesis, radical scavenging, antioxidant and Fe2+ chelating activity

Acta Pharm. 2010 Sep;60(3):325-37. doi: 10.2478/v10007-010-0024-9.

Abstract

Novel primaquine conjugates with non-steroidal anti-inlammatory drugs (PQ-NSAIDs, 4a-h) were prepared, fully chemically characterized and screened for radical scavenging and antioxidant activities. The synthetic procedure leading to twin drugs 4a-h involved two steps: i) preparation of NSAID benzotriazolides 3a-h from the corresponding NSAID (ibuprofen, ketoprofen, fenoprofen, ketoprofen hydroxy and methylene analogues, diclofenac or indomethacin) and benzotriazole carboxylic acid chloride (BtCOCl, 1), ii) reaction of intermediates 3a-h with PQ. The prepared PQ-NSAIDs exerted moderate activities in the DPPH free radical test and β-carotene-linoleic acid assay. Moreover, ketoprofen derivatives 4d and 4b demonstrated a notable Fe2+ chelating ability as well. On the other hand, negligible antiproliferative and antituberculotic effects of conjugates 4a-h were observed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Inflammatory Agents, Non-Steroidal / chemical synthesis
  • Anti-Inflammatory Agents, Non-Steroidal / chemistry
  • Anti-Inflammatory Agents, Non-Steroidal / pharmacology*
  • Antioxidants / chemical synthesis
  • Antioxidants / chemistry
  • Antioxidants / pharmacology*
  • Biphenyl Compounds / chemistry
  • Free Radical Scavengers / chemical synthesis
  • Free Radical Scavengers / chemistry
  • Free Radical Scavengers / pharmacology
  • Iron Chelating Agents / chemical synthesis
  • Iron Chelating Agents / chemistry
  • Iron Chelating Agents / pharmacology*
  • Picrates / chemistry
  • Primaquine / chemical synthesis
  • Primaquine / chemistry
  • Primaquine / pharmacology*

Substances

  • Anti-Inflammatory Agents, Non-Steroidal
  • Antioxidants
  • Biphenyl Compounds
  • Free Radical Scavengers
  • Iron Chelating Agents
  • Picrates
  • 1,1-diphenyl-2-picrylhydrazyl
  • Primaquine