Design, synthesis and structure–activity relationship of novel tricyclic benzimidazolone derivatives as potent 18kDa translocator protein (TSPO) ligands
作者:Takayuki Fukaya、Toru Kodo、Takeo Ishiyama、Hiroyuki Nishikawa、Satoko Baba、Shuji Masumoto
DOI:10.1016/j.bmc.2012.12.024
日期:2013.3
The 18 kDa translocator protein (TSPO) was identified as a discrete receptor for diazepam (1). Since TSPO in the central nervous system (CNS) is believed to regulate neurosteroids biosynthesis, selective TSPO ligands are expected to be useful in the treatment of psychiatric disorders. We synthesized three novel tricyclic benzimidazolone derivatives, and selected the dihydroimidazoquinolinone derivative
18 kDa转运蛋白(TSPO)被确定为地西epa的离散受体(1)。由于中枢神经系统(CNS)中的TSPO被认为可以调节类固醇的生物合成,因此预期选择性TSPO配体可用于治疗精神疾病。我们合成了三个新颖的三环苯并咪唑酮衍生物,并选择二氢咪唑并喹啉酮衍生物27作为TSPO的主要配体。对二氢咪唑并喹啉酮衍生物的构效关系(SAR)的研究表明,这些化合物对TSPO具有强亲和力(亚纳摩尔K i值),但代谢稳定性差。这些化合物的优化产生了化合物48 具有对TSPO的强亲和力和良好的体外PK特性。