SYNTHESIS OF TRIGONELLINE AND NICOTINAMIDE LINKED PRODRUGS OF 5-AMINOSALICYLIC ACID (5-ASA) WITH ANALGESIC AND ANTI-INFLAMMATORY EFFECTS
Hajjaj H.M. Abdu-Allah, Samia G. Abdel‐Moty, Abdel‐Nasser El‐Shorbagi, A. Abdel-Alim · Bulletin of Pharmaceutical Sciences Assiut · 2005
3-N-(4`-Hydroxy-3`-substituted phenyl)carbamoyl-1-methylpyridinium iodides (compds. 5b-j) and 3-carbamoyl-1-(N-(4`-hydroxy- 3`-substituted phenyl)carbamoyl) methyl pyridinium chlorides (compds. 7a-j) were synthesised and some of them were tested for their analgesic and antiinflammatory activities by hot plate test and carageenin-induced hind paw edema model, respectively. Compound 5b revealed the most potent analgesic and anti-inflammatory activities in comparison to sulfasalazine (SASP) and 5-ASA. In addition, ulcerogenicity, LD50, in-vivo and in vitro cleavage and pH stability of compound 5b were also determined.