better protections than the reference. The most prospective compounds comprised salicylic acid moieties, whose 4‐substituted derivatives were related to lower acute toxicity and considerable activity. 4‐[3‐(Ethoxycarbonyl)‐2‐methyl‐5‐(3,4‐dimethoxy‐phenyl)‐1H‐pyrrol‐1‐yl]‐2‐hydroxy‐benzoic acid 3c was pointed out as the most prospective substance due to its lower acute toxicity (378 mg/kg body weight,
合成并评估了十种
吡咯衍
生物(包括六种新化合物)作为镇痛剂开发的潜在平台。使用乙酰
水杨酸作为参考物质对小鼠进行急性腹腔内毒性和镇痛活性研究(
醋酸扭体试验)。产品 3c、3d、3e 和 3h 表现出剂量依赖性活性,表明保护作用比参考高 1.5 至 2.5 倍。最有前景的化合物包含
水杨酸部分,其 4 取代衍
生物与较低的急性毒性和相当大的活性有关。4- [3-(乙氧羰基)-2-甲基- 5-(3,4-二甲氧基-苯基)-1H-
吡咯-1-基]-2-羟基-
苯甲酸3c被指出是最有前景的物质其较低的急性毒性(378 毫克/公斤体重,