Synthesis and In Vitro/In Vivo Evaluation of 5‐Aminosalicyl‐Glycine as a Colon‐Specific Prodrug of 5‐Aminosalicylic Acid
作者:Yun Jin Jung、Jeoung Soo Lee、Young Mi Kim
DOI:10.1002/(sici)1520-6017(200005)89:5<594::aid-jps5>3.0.co;2-8
日期:2000.5
A simple synthetic route for the preparation of amino acid conjugate of 5-aminosalicylic acid (5-ASA) was exploited and prepared 5-aminosalicyl-glycine (5-ASA-Gly) in good yield. In vitro and in vivo properties of 5-ASA-Gly as a colon-specific prodrug of 5-ASA were investigated using rats as the test animal. Incubation of 5-ASA-Gly with cecal or colonic contents at 37 degrees C released 5-ASA in 65
探索了一种简单的合成方法,用于制备5-氨基水杨酸(5-ASA)的氨基酸缀合物,并以高收率制备了5-氨基水杨基-甘氨酸(5-ASA-Gly)。使用大鼠作为测试动物,研究了5-ASA-Gly作为5-ASA结肠特异性前药的体外和体内特性。在37°C下将具有盲肠或结肠内容物的5-ASA-Gly孵育在8小时内分别释放了剂量为65%或27%的5-ASA。从5-ASA-Gly与胃或小肠匀浆中孵育未检测到5-ASA。静脉内注射5-ASA-Gly后,5-ASA-Gly的血浆浓度迅速降低,血液中未检测到5-ASA,这表明5-ASA-Gly在血浆中未降解。口服5-ASA-Gly后,从粪便中回收到约50%的剂量为5-ASA和N-乙酰基ASA,3-%为5-ASA-Gly,14%为5-ASA-Gly,28%为5-ASA和N-乙酰基-ASA在24小时内从尿液中排出。这些结果表明,大部分的5-ASA-Gly被递送到大肠并