Du Fangyu, Cao Ruolin, Chen Lu, Sun Jianwen, Shi Yajie, Fu Yang, Hammock Bruce D, Zheng Zhonghui, Liu Zhongbo, Chen Guoliang
Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China.
Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA.
Acta Pharm Sin B. 2022 Mar;12(3):1377-1389. doi: 10.1016/j.apsb.2021.09.018. Epub 2021 Sep 22.
Soluble epoxide hydrolase (sEH) is related to arachidonic acid cascade and is over-expressed in a variety of diseases, making sEH an attractive target for the treatment of pain as well as inflammatory-related diseases. A new series of memantyl urea derivatives as potent sEH inhibitors was obtained using our previous reported compound as lead compound. A preferential modification of piperidinyl to 3-carbamoyl piperidinyl was identified for this series structure-based rational drug design. Compound exhibited moderate percentage plasma protein binding (88.6%) and better metabolic stability . After oral administration, the bioavailability of was 28.6%. Acute toxicity test showed that was well tolerated and there was no adverse event encountered at dose of 6.0 g/kg. Inhibitor also displayed robust analgesic effect and dose-dependently attenuated neuropathic pain in rat model induced by spared nerve injury, which was better than gabapentin and sEH inhibitor (±)-EC-5026. In one word, the oral administration of significantly alleviated pain and improved the health status of the rats, demonstrating that was a promising candidate to be further evaluated for the treatment of neuropathic pain.
可溶性环氧化物水解酶(sEH)与花生四烯酸级联反应相关,且在多种疾病中过度表达,这使得sEH成为治疗疼痛以及炎症相关疾病的一个有吸引力的靶点。以我们之前报道的化合物为先导化合物,获得了一系列新型的作为强效sEH抑制剂的美金刚脲衍生物。针对该系列基于结构的合理药物设计,确定了将哌啶基优先修饰为3-氨基甲酰基哌啶基。化合物表现出中等程度的血浆蛋白结合率(88.6%)和较好的代谢稳定性。口服给药后,其生物利用度为28.6%。急性毒性试验表明,该化合物耐受性良好,在剂量为6.0 g/kg时未出现不良事件。抑制剂在 spared nerve injury 诱导的大鼠模型中也表现出强大的镇痛作用,并能剂量依赖性地减轻神经性疼痛,优于加巴喷丁和sEH抑制剂(±)-EC-5026。总之,口服该化合物可显著减轻大鼠疼痛并改善其健康状况,表明该化合物是一个有前景的用于治疗神经性疼痛的候选药物,有待进一步评估。