The present invention relates to compounds of formula (I) and their pharmaceutical compositions. In addition, the present invention relates to therapeutic methods for the treatment and/or prevention of Αβ-related pathologies such as Down's syndrome, β- amyloid angiopathy such as but not limited to cerebral amyloid angiopathy or hereditary cerebral hemorrhage, disorders associated with cognitive impairment such as but not limited to MCI ("mild cognitive impairment"), Alzheimer's disease, memory loss, attention deficit symptoms associated with Alzheimer's disease, neurodegeneration associated with diseases such as Alzheimer's disease or dementia including dementia of mixed vascular and degenerative origin, pre-senile dementia, senile dementia and dementia associated with Parkinson's disease.
本发明涉及公式(I)化合物及其制药组合物。此外,本发明涉及治疗和/或预防与Αβ相关的病理学,如唐氏综合症,β-淀粉样血管病,如但不限于脑淀粉样血管病或遗传性脑出血,与认知障碍相关的疾病,如但不限于轻度认知障碍(MCI),阿尔茨海默病,记忆丧失,与阿尔茨海默病相关的注意力缺陷症状,与阿尔茨海默病或痴呆症等疾病相关的神经退行性。包括混合血管性和退行性起源的痴呆症,早老性痴呆症,老年痴呆症和与帕
金森病相关的痴呆症的治疗方法。