Discovery of Novel 1,2,4-Thiadiazole Derivatives as Potent, Orally Active Agonists of Sphingosine 1-Phosphate Receptor Subtype 1 (S1P<sub>1</sub>)
作者:Feng Ren、Guanghui Deng、Hailong Wang、Linbo Luan、Qinghua Meng、Qiongfeng Xu、Heng Xu、Xuesong Xu、Haibo Zhang、Baowei Zhao、Chengyong Li、Taylor B. Guo、Jiansong Yang、Wei Zhang、Yonggang Zhao、Qiantao Jia、Hongtao Lu、Jia-Ning Xiang、John D. Elliott、Xichen Lin
DOI:10.1021/jm2016107
日期:2012.5.10
A novel series of 1,2,4-thiadiazole compounds was discovered as selective S1P1 agonists. The extensive structure–activity relationship studies for these analogues were reported. Among them, 17g was identified to show high in vitro potency with reasonable free unbound fraction in plasma (Fu > 0.5%), good brain penetration (BBR > 0.5), and desirable pharmacokinetic properties in mouse and rat. Oral administration
发现了一系列新的1,2,4-噻二唑化合物作为选择性的S1P 1激动剂。报道了这些类似物的广泛的构效关系研究。其中,已鉴定出17g具有较高的体外效价,血浆中的自由游离结合分数合理(F u > 0.5%),脑渗透性良好(BBR> 0.5),并且在小鼠和大鼠中具有理想的药代动力学特性。口服1 mg / kg 17g导致剂量后4 h外周血淋巴细胞明显减少,并在24 h迅速恢复淋巴细胞。17g在小鼠的重复剂量研究中显示出短暂的淋巴细胞减少。另外17g在MS的小鼠EAE模型中也证明了与FTY720(1)相当的功效。