Novel compounds of formula (I)
wherein R
1
to R
4
and X have the meaning according to the claims, are glucosidase inhibitors, and can be employed, inter alia, for the treatment of Alzheimer's disease.
公式(I)的新化合物,其中R1至R4和X的含义根据权利要求书中所述,是
葡萄糖苷酶
抑制剂,可用于治疗阿尔茨海默病等疾病。