A compound of the formula I in which ##STR1## Z is O or S; R.sup.11 is a halogen atom; R.sup.12 is a halogen atom or a trifluoromethyl group; and X is S, SO, SO.sub.2, O or NH; R.sup.4 is naphthyl, quinolinyl, benzimidazolyl, pyridyl, pyradazinyl, benzoxazolyl or benzothiazolyl, unsubstituted or substituted by one or two substituents selected from a halogen atom, (1-4C)alkyl, (1-4C)alkoxy, nitro, (1-4C)alkoxycarbonyl, halo(1-4C)alkyl, and phenyl; or a pharmaceutically acceptable salt thereof. The compounds are useful as inhibitors of amyloid beta-protein production.
一种具有以下式I的化合物:##STR1## 其中Z为O或S;R.sup.11为卤素原子;R.sup.12为卤素原子或三
氟甲基基团;X为S、SO、SO.sub.2、O或NH;R.sup.4为
萘基、
喹啉基、
苯并咪唑基、
吡啶基、
吡啶并
咪唑基、苯并
噁唑基或
苯并噻唑基,未取代或取代为一个或两个取自卤素原子、(1-4C)烷基、(1-4C)烷氧基、硝基、(1-4C)烷氧羰基、卤代(1-4C)烷基和苯基的取代基;或其药学上可接受的盐。这些化合物可用作淀粉样β-蛋白产生的
抑制剂。