A novel series of 2-heteroaryl substituted benzimidazole derivatives, containing the piperidinylphenyl acetamide group at the 1-position, were synthesized and evaluated as MCH-R1 antagonists. Extensive SAR investigation probing the effects of C-2 heteroaryl group led to the identification of 2-[2-(pyridin-3-yl)ethyl] analog 3o, which exhibits highly potent MCH-R1 binding activity with an $IC_50}$ value of 1 nM. This substance 3o also has low hERG binding activity, good metabolic stability, and favorable pharmacokinetic properties.
合成了一系列新型的2-杂芳基取代的
苯并咪唑衍
生物,在1位含有
哌啶基苯乙酰胺基团,并对其作为MCH-R1拮抗剂进行了评估。广泛的
SAR研究探讨了C-2杂芳基团的影响,最终确定了2-[2-(
吡啶-3-基)乙基]类似物3o,该化合物表现出极高的MCH-R1结合活性,
$IC_50}$值为1 nM。该物质3o还具有低的hERG结合活性、良好的代谢稳定性和有利的药代动力学特性。