Studies on novel 7-acyl-5-chloro-2-oxo-3H-benzoxazole derivatives as potential analgesic and anti-inflammatory agents

Unlu S., BAYTAŞ S. , Kupeli E., Yesilada E.

ARCHIV DER PHARMAZIE, vol.336, pp.310-321, 2003 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 336
  • Publication Date: 2003
  • Doi Number: 10.1002/ardp.200300748
  • Title of Journal : ARCHIV DER PHARMAZIE
  • Page Numbers: pp.310-321


In this study, a series of (7-acyl-5-chloro-2-oxo-3H-benzoxazol-3-yl)alkanoic acid derivatives were synthesized and evaluated for their analgesic and anti-inflammatory activities by using the p-benzoquinone-induced writhing test and the carrageenan hind paw edema model, respectively. Acetic acid-induced peritoneal capillary permeability test and serotonin-induced hind paw edema test were also employed for the most active compounds. The test results indicated that (7-acyl-2-oxo-3H-benzoxazol-3-yl)alkanoic acids (Compounds 6 a-c, 8 a-c, 10 a-c) were equally or more potent analgesic and anti-inflammatory agents than aspirin and indomethacin respectively. The compounds 8 a and 8 c, but not 8 b which have the longest carbon chain on alkanoic acid moiety did not induce gastric lesion in mice.