The present invention provides novel intermediates and processes for preparing them. They are useful for preparing (2R)-2-[[(4-chlorophenyl)-sulfonyl][[2-fluoro-4-(1,2,4-oxadiazol-3-yl)phenyl]methyl]amino]-5,5,5-trifluoropentanamide which is suitable for the treatment of Alzheimer's disease and other conditions associated with β-amyloid peptide.
本发明提供了新型中间体及其制备工艺。它们可用于制备(2R)-2-[[(4-
氯苯基)-磺酰基][[2-
氟-4-(
1,2,4-恶二唑-3-基)苯基]甲基]
氨基]-5,5,5-三
氟戊酰胺,该物质适用于治疗阿尔茨海默病和其他与β-淀粉样肽相关的疾病。