The invention provides an indazole derivative of formula (1), or a pharmaceutically acceptable salt or N-oxide thereof, wherein R1, R2, R3 and R4 are as defined herein. The indazole derivatives are capable of blockading voltage dependent sodium channels and they are useful in the treatment or prevention of normal tension glaucoma, multiple sclerosis, a motorneurone disease, stroke, spinal cord injury, Alzheimer's disease, Parkinson's disease or pain.
该发明提供了一种式(1)的
吲唑衍
生物,或其药用可接受的盐或N-氧化物,其中R1、R2、R3和R4如本文所定义。这些
吲唑衍
生物能够阻断电压依赖性
钠通道,它们在治疗或预防正常张力青光眼、多发性硬化症、运动神经元疾病、中风、脊髓损伤、阿尔茨海默病、帕
金森病或疼痛方面具有用途。