Synthesis and Analgesic Activity of 2-Methyl-2-[1-(3-benzoyl-4-substituted-1,4-dihydropyridyl)]acetic Acid Methyl Esters, Acetic Acids, and Acetamides
作者:Sammy A. Agudoawu、Sai-hay Yiu、John L. Wallace、Edward E. Knaus
DOI:10.1002/(sici)1521-4184(19996)332:6<213::aid-ardp213>3.0.co;2-g
日期:1999.6
of 2‐methyl‐2‐[1‐(3‐benzoyl‐4‐substituted‐1,4‐dihy‐dropyridyl)] acetic acid methyl esters (7), weak acetic acids (8), and acetamides (9) were designed for evaluation as less acidic non‐ulcerogenic non‐steroidal antiinflammatory drugs (NSAIDs). In this respect, the model compound 2‐methyl‐2‐[1‐(3‐benzoyl‐4‐phenyl‐1,4‐dihydropyridyl)]acetic acid (8a), unlike traditional arylacetic acid NSAIDs, was shown
一组2-甲基-2-[1-(3-苯甲酰基-4-取代-1,4-二氢吡啶基)]乙酸甲酯(7)、弱乙酸(8)和乙酰胺(9)设计用于评估酸性较低的非致溃疡性非甾体抗炎药 (NSAID)。在这方面,模型化合物 2-甲基-2-[1-(3-苯甲酰基-4-苯基-1,4-二氢吡啶基)]乙酸 (8a) 与传统的芳基乙酸 NSAIDs 不同,后者被证明是一种pKa 为 9.17 的弱酸。与芳基乙酸非甾体抗炎药相比,8a 的 α-甲基乙酸钠盐或 α-甲基乙酸甲酯 (7a) 不抑制环氧合酶 - 1 (COX - 1) 或 - 2 (COX - 2)。体外稳定性研究表明,α-甲基乙酸甲酯(7a)作为α-甲基乙酸衍生物(8a)的前药,经历快速(> 10 分钟)和与大鼠血浆孵育或与大鼠肝匀浆孵育后的定量转化(t1 / 2 = 25 分钟)。相比之下,α-甲基乙酰胺(9a)在与大鼠血浆或大鼠肝匀浆孵育后转化为 α-甲基乙酸衍