The synthesis and SAR of a series of 4,5,6,7-tetrahydro-imidazo[4,5-c]pyridine P2X7 antagonists are described. Addressing P2X7 affinity and liver microsomal stability issues encountered with this template afforded methyl substituted 4,5,6,7-tetrahydro-imidazo[4,5-c]pyridines ultimately leading to the identification of 1 (JNJ 54166060). 1 is a potent P2X7 antagonist with an ED50 = 2.3 mg/kg in rats
描述了一系列4,5,6,7-四氢
咪唑并[4,5- c ]
吡啶P2X7拮抗剂的合成和
SAR 。解决此模板遇到的P2X7亲和力和肝微粒体稳定性问题,提供了甲基取代的4,5,6,7-四氢
咪唑并[4,5- c ]
吡啶,最终导致1的鉴定(JNJ 54166060)。1是一种有效的P2X7拮抗剂,在大鼠中的ED 50 = 2.3 mg / kg,在临床前物种中具有较高的口服
生物利用度和低中度清除率,在大鼠中具有可接受的安全范围,并且预计的人类剂量为120 mg QD。此外,1具有独特的CYP谱,被发现是
咪达唑仑CYP3A代谢的区域选择性
抑制剂。