Reactive Metabolite Trapping Studies on Imidazo- and 2-Methylimidazo[2,1-<i>b</i>]thiazole-Based Inverse Agonists of the Ghrelin Receptor
作者:Amit S. Kalgutkar、Tim F. Ryder、Gregory S. Walker、Suvi T. M. Orr、Shawn Cabral、Theunis C. Goosen、Kimberly Lapham、Heather Eng
DOI:10.1124/dmd.113.051839
日期:2013.7
agonists, 1-2-[2-chloro-4-(2H-1,2,3-triazol-2-yl)benzyl]-2,7-diazaspiro[3.5]nonan-7-yl}-2-(imidazo[2,1-b]thiazol-6-yl)ethanone (1) and 1-2-[2-chloro-4-(2H-1,2,3-triazol-2-yl)benzyl]-2,7-diazaspiro[3.5]nonan-7-yl}-2-(2-methylimidazo[2,1-b]thiazol-6-yl)ethanone (2), containing a fused imidazo[2,1-b]thiazole motif in the core structure. Both compounds underwent oxidative metabolism in NADPH- and glutathione-supplemented
目前的研究检查了生长素释放肽受体反向激动剂1- 2- [2-氯-4-(2H-1,2,3-三唑-2-基)苄基] -2,7-二氮杂螺[3.5]的生物激活潜力。 ] nonan-7-基} -2-(咪唑并[2,1-b]噻唑-6-基)乙酮(1)和1- 2- [2-氯-4-(2H-1,2,3) -三唑-2-基)苄基] -2,7-二氮杂螺并[3.5]壬基-7-基} -2-(2-甲基咪唑并[2,1-b]噻唑-6-基)乙酮(2),核心结构中有一个融合的咪唑并[2,1-b]噻唑基序。两种化合物都在NADPH和补充谷胱甘肽的人肝微粒体中进行氧化代谢,生成谷胱甘肽共轭物,这与它们对反应性物种的生物活化相一致。质谱片段化和NMR分析表明,巯基缀合物中谷胱甘肽部分的附着位点在自行车内的噻唑环上。用咪唑并[2,1-b]噻唑衍生物1识别了两种谷胱甘肽共轭物。一种加合物是从谷胱甘肽的迈克尔加成到推定的1的S-氧化物代谢