A compound of formula (I) or an N-oxide, a salt, a hydrate, a solvate, a tautomer or a stereoisomer of said compound, or a salt of said N-oxide, tautomer or stereoisomer for use in the treatment or prophylaxis of brain ischemia, ischemic brain injury, Ischemic Stroke (IS), haemorrhagic stroke, traumatic brain injury, spinal cord injury.