Fused aminodihydrothiazine derivatives

摘要

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.;

主权项

1. A compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein
X is hydrogen or fluorine;R is monofluoromethyl or difluoromethyl.