The present invention relates to a fused aminodihydrothiazine derivative of formula (I): wherein X is hydrogen or fluorine; R is monofluoromethyl or difluoromethyl; and pharmaceutically acceptable salts thereof; which compound has an Aβ production inhibitory effect or a BACE1 inhibitory effect and is useful as a prophylactic or therapeutic agent for a neurodegenerative disease caused by Aβ and typified by Alzheimer-type dementia.
本发明涉及公式(I)的融合
氨基二氢
噻嗪衍
生物:其中X为氢或
氟;R为单
氟甲基或双
氟甲基;以及其药学上可接受的盐。该化合物具有Aβ产生抑制作用或
BACE1抑制作用,并且可用作一种预防或治疗Aβ引起的神经退行性疾病,如阿尔茨海默病等的治疗药物。