The present invention relates to new 5H-thiazolo\x9b3,2-a!pyrimidin -5-one derivatives having the formula (I): ##STR1## wherein Ar is phenyl optionally substituted by one or two groups selected from halogen, alkyl having from 1 to 4 carbon atoms, methylendioxy, alkoxy having from 1 to 4 carbon atoms, and trifluoromethyl; and R is a group selected from (a) or (b): ##STR2## as well as their pharmaceutically acceptable addition salts, which are useful in the treatment of psychosis, schizophrenia and anxiety. This invention also discloses methods and intermediates for their preparation and pharmaceutical compositions containing them.
本发明涉及具有以下式子(I)的新的5H-
噻唑并[3,2-a]
嘧啶-5-酮衍
生物:##STR1## 其中Ar是苯基,可以选择性地被卤素、碳数为1至4的烷基、甲基二氧基、碳数为1至4的烷氧基和三
氟甲基中的一种或两种基团取代;而R是从(a)或(b)中选择的基团:##STR2## 这些衍
生物的药学上可接受的加盐物在治疗精神病、精神分裂症和焦虑症方面是有用的。本发明还揭示了它们的制备方法和中间体以及含有它们的制药组合物。