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6-Amino[1,2,5]oxadiazolo[3,4-b]pyrazin-5-ol Derivatives as Efficacious Mitochondrial Uncouplers in STAM Mouse Model of Nonalcoholic Steatohepatitis.
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2020-05-11 , DOI: 10.1021/acs.jmedchem.0c00542
Joseph M Salamoun 1 , Christopher J Garcia 1 , Stefan R Hargett 2 , Jacob H Murray 1 , Sing-Young Chen 3 , Martina Beretta 3 , Stephanie J Alexopoulos 3 , Divya P Shah 3 , Ellen M Olzomer 3 , Simon P Tucker 4, 5 , Kyle L Hoehn 2, 3 , Webster L Santos 1
Affiliation  

Small molecule mitochondrial uncouplers have recently garnered great interest for their potential in treating nonalcoholic steatohepatitis (NASH). In this study, we report the structure–activity relationship profiling of a 6-amino[1,2,5]oxadiazolo[3,4-b]pyrazin-5-ol core, which utilizes the hydroxy moiety as the proton transporter across the mitochondrial inner membrane. We demonstrate that a wide array of substituents is tolerated with this novel scaffold that increased cellular metabolic rates in vitro using changes in oxygen consumption rate as a readout. In particular, compound SHS4121705 (12i) displayed an EC50 of 4.3 μM in L6 myoblast cells and excellent oral bioavailability and liver exposure in mice. In the STAM mouse model of NASH, administration of 12i at 25 mg kg–1 day–1 lowered liver triglyceride levels and improved liver markers such as alanine aminotransferase, NAFLD activity score, and fibrosis. Importantly, no changes in body temperature or food intake were observed. As potential treatment of NASH, mitochondrial uncouplers show promise for future development.

中文翻译:


6-氨基[1,2,5]恶二唑并[3,4-b]吡嗪-5-醇衍生物作为非酒精性脂肪性肝炎 STAM 小鼠模型中有效的线粒体解偶联剂。



小分子线粒体解偶联剂最近因其在治疗非酒精性脂肪性肝炎(NASH)方面的潜力而引起了人们的极大兴趣。在这项研究中,我们报告了 6-氨基[1,2,5]恶二唑并[3,4- b ]pyrazin-5-ol 核心的结构-活性关系分析,该核心利用羟基部分作为跨膜的质子转运蛋白。线粒体内膜。我们证明,这种新型支架可以耐受多种取代基,该支架可以通过耗氧率的变化作为读数来增加体外细胞代谢率。特别是,化合物SHS4121705 ( 12i ) 在 L6 成肌细胞中表现出 4.3 μM 的 EC 50 ,并且在小鼠中表现出优异的口服生物利用度和肝脏暴露。在 NASH 的 STAM 小鼠模型中,给予 25 mg kg –1–112i降低了肝脏甘油三酯水平,并改善了肝脏标志物,如丙氨酸氨基转移酶、NAFLD 活动评分和纤维化。重要的是,没有观察到体温或食物摄入量的变化。作为 NASH 的潜在治疗方法,线粒体解偶联剂显示出未来发展的前景。
更新日期:2020-05-11
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