The present invention relates to a fused aminodihydrothiazine derivative of formula (I):
wherein
R is hydrogen or C1-6alkyl, optionally substituted by one to five halogen atoms;
n is 0, 1, 2 or 3;
Ar is phenyl or a 5- or 6-membered heteroaromatic group containing 1, 2 or 3 N atoms, which Ar is optionally substituted by one to three substituents selected from hal, hydroxyl, —CN, C1-6alkyl, C2-3alkenyl, C2-3alkynyl, C1-6alkoxy, C3-6cycloalkoxy and pyrazine, where C1-6alkyl and C1-6alkoxy are optionally substituted by one to three halogen atoms;
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.
本发明涉及一种公式(I)的融合
氨基二
氢噻嗪衍
生物,其中R为
氢或C1-6烷基,可选地被1至5个卤素原子取代;n为0、1、2或3;Ar为
苯基或含有1、2或3个N原子的5-或6成员杂环芳基基团,其中Ar可选地被1至3个取代基所取代,所述取代基选自卤素、羟基、-CN、C1-6烷基、C2-3
烯基、C2-3炔基、C1-6烷
氧基、C3-6
环烷氧基和
吡嗪,其中C1-6烷基和C1-6烷
氧基可选地被1至3个卤素原子取代;以及其药学上可以接受的盐;所述化合物具有Aβ生产抑制作用或
BACE1抑制作用,并且作为预防或治疗由Aβ引起的以阿尔茨海默型痴呆为代表的神经退行性疾病的预防或治疗剂。