Synthesis of some new pyridyl-ethylated benzoxazolinones with analgesic and anti-inflammatory activities

Palaska E., Gokhan N., Erdogan H., Tel B. C., Demirdamar R.

ARZNEIMITTELFORSCHUNG-DRUG RESEARCH, vol.49, no.9, pp.754-758, 1999 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 9
  • Publication Date: 1999
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.754-758
  • Hacettepe University Affiliated: Yes


Twelve new 3-[2-(2- and/or 4-pyridyl)ethyl]benzoxazolinone derivatives have been synthesized by reacting 2- and/or 4-vinylpyridine and appropriate benzoxazolinones. Their chemical structures have been proven by IR, H-1-NMR and elemental analysis. Analgesic activities of these compounds were investigated by a modified Koster and constant temperature hot-plate test. Test results revealed that most of the compounds at 100 mg/kg dose level showed significant analgesic activities when compared to acetylsalicylic acid and morphine. Therefore the compounds were screened for their anti-inflammatory activities using the carrageenan hind paw edema test. Compounds 3-8 were found more active than indometacin. In gastric ulceration studies, any of the compounds showed no gastrointestinal bleeding at 100 mg/kg dose level.