From Oxadiazole to Triazole Analogues: Optimization toward a Dual Orexin Receptor Antagonist with Improved in vivo Efficacy in Dogs
作者:Christine Brotschi、Martin H. Bolli、John Gatfield、Bibia Heidmann、Francois Jenck、Catherine Roch、Thierry Sifferlen、Alexander Treiber、Jodi T. Williams、Christoph Boss
DOI:10.1002/cmdc.201900618
日期:2020.3.5
The orexin system is responsible for regulating the sleep-wake cycle. Suvorexant, a dual orexin receptor antagonist (DORA) is approved by the FDA for the treatment of insomnia disorders. Herein, we report the optimization efforts toward a DORA, where our starting point was (5-methoxy-4-methyl-2-[1,2,3]triazol-2-yl-phenyl)-(S)-2-[5-(2-trifluoromethoxy-phenyl)-[1,2,4]oxadiazol-3-yl]-pyrrolidin-1-yl}methanone
食欲素系统负责调节睡眠-觉醒周期。FDA批准Suvorexant是一种双orexin受体拮抗剂(DORA),用于治疗失眠症。在这里,我们报告了针对DORA的优化工作,我们的出发点是(5-甲氧基-4-甲基-2- [1,2,3]三唑-2-基-苯基)-(S)-2- [5-(2-三氟甲氧基-苯基)-[1,2,4]恶二唑-3-基]-吡咯烷-1-基}甲酮(6),是从我们内部研究计划中获得的化合物。化合物6被证明是一种有效的,可穿透大脑的DORA,在大鼠中的体内功效类似于suvorexant。然而,已发现低代谢稳定性,高血浆蛋白结合(PPB),低脑自由分数(fu brain)和低水溶性的缺点,因此化合物6不是进一步开发的理想候选者。