We synthesized putative metabolites of 4'-acetyl-2'-(2, 4-difluorophenoxy)methanesulfonanilide (FK3311, 1), a novel antiinflammatory agent, in order to confirm their structures and also to investigate their pharmacological properties. The structuers of the metabolites 2-5 were confirmed by direct comparison with the synthesized authentic compounds. We employed the following tests to assess pharmacological activities : zymosan-induced prostaglandin E2 production for in vitro activity, adjuvant-induced arthritis for antiinflammatory activity, and acetic acid-induced writhing for analgesic activity. Metabolite 2 is nearly equipotent to 1 in the in vivo tests and metabolite 3 is an active metabolite with in vitro activity comparable to that of 1.
我们合成了新型抗炎剂 4'-乙酰基-2'-(2, 4-二
氟苯氧基)甲磺酰
苯胺 (FK3311, 1) 的假定代谢物,以确认其结构并研究其药理学特性。通过与合成的真实化合物直接比较,确认了代谢物2-5的结构。我们采用以下测试来评估药理学活性:酵母聚糖诱导的
前列腺素E2产生的体外活性、佐剂诱导的关节炎的抗炎活性以及
乙酸诱导的扭体的镇痛活性。在体内测试中,代谢物 2 几乎与 1 等价,代谢物 3 是一种活性代谢物,其体外活性与 1 相当。