Analogues of Capsaicin with Agonist Activity as Novel Analgesic Agents: Structure−Activity Studies. 4. Potent, Orally Active Analgesics
作者:Roger Wrigglesworth、Christopher S. J. Walpole、Stuart Bevan、Elizabeth A. Campbell、Andy Dray、Glyn A. Hughes、Iain James、Kay J. Masdin、Janet Winter
DOI:10.1021/jm960512h
日期:1996.1.1
reported modular approach. These in vitro agonist effects were shown to correlate with analgesic potency in rodent models. Combination of optimal structural features from each of these regions of the capsaicin molecule have led to highly potent agonists (eg., 1b). Evaluation in vivo established that 1b had analgesic properties but poor oral activity, short duration of action, and excitatory side effects
辣椒素分子激动剂特性所必需的三个区域的结构特征已通过先前报道的模块化方法进行了描述。在啮齿动物模型中,这些体外激动剂作用与镇痛效果相关。辣椒素分子每个这些区域的最佳结构特征的组合导致了高效的激动剂(例如1b)。体内评估表明1b具有镇痛作用,但口服活性差,作用时间短和兴奋性副作用,使该化合物无法进一步开发。初步代谢研究表明,1b的酚部分在体内迅速被葡萄糖醛酸化,为不良的药代动力学提供了可能的解释。随后对酚基团的特定修饰导致化合物2a-j,保留了体外效能。与“母体”苯酚系列相比,该系列的两个代表2a,h的体内概况有很大改善,它们有望用作止痛药。