5-Aminosalicylic acid is an anti-inflammatory drug used in the treatment of inflammatory bowel diseases including ulcerative colitis and Crohn’s disease. Due to its rapid and extensive absorption in the upper gastro-intestinal tract, substantial amount of 5-aminosalicylic acid is already lost before reaching the site of action, i.e. the colon. In order to prevent this loss of drug, carrier linked prodrug approach has been used and azo prodrugs have been synthesized with a purpose of colon targeting. The present research describes the synthesis and characterization of azo prodrugs of 5-aminosalicylic acid with aromatic amines. The synthesized prodrugs were tested for antioxidant activity using DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging activity. All the synthesized compounds were found to possess mild to moderate radical scavenging activity.
5-
氨基
水杨酸是一种抗炎药物,用于治疗包括溃疡性结肠炎和克罗恩病在内的炎症性肠病。由于
5-氨基水杨酸在上消化道的吸收速度快、吸收范围广,因此在到达作用部位(即结肠)之前就已经流失了大量的
5-氨基水杨酸。为了防止药物流失,人们采用了载体连接原药的方法,合成了以结肠为靶点的偶氮原药。本研究介绍了
5-氨基水杨酸与芳香胺的偶氮原药的合成和表征。使用
DPPH(2,2
-二苯基-1-苦基
肼)自由基清除活性测试了合成的原药的抗氧化活性。结果发现,所有合成的化合物都具有轻度到中度的自由基清除活性。