This invention relates to novel compounds having the structural formula Ia or formula Ib: Ia Ib and their pharmaceutically acceptable salts, tautomers or in vivo hydrolysable precursors, compositions and methods of use thereof. These novel compounds provide a treatment or prophylaxis of Aβ related pathologies such as cognitive impairment, Alzheimer Disease, neurodegeneration and dementia.
这项发明涉及具有结构式Ia或结构式Ib的新化合物:Ia Ib及其药用可接受的盐、互变异构体或体内可
水解的前体,以及其组合物和使用方法。这些新化合物提供了治疗或预防与Aβ相关的病理学,如认知障碍、阿尔茨海默病、神经退行性疾病和痴呆症的方法。