New quinazolinone derivatives of the formula:
wherein R' is lower alkyl or a group of the formula:
(wherein A is lower alkylene and R4 is aryl) and the other symbols have certain definitions, pharmaceutically acceptable salts thereof and processes for their preparation. The invention also comprises pharmaceutical compositions containing such compounds and their use for treatment of allergic symptoms in human being and animals.
式中的新
喹唑啉酮衍
生物:
其中 R' 为低级烷基或式中的基团:
(其中 A 为低级亚烷基,R4 为芳基)和其它符号具有特定定义的新
喹唑啉酮衍
生物、其药学上可接受的盐及其制备工艺。本发明还包括含有此类化合物的药物组合物及其用于治疗人类和动物过敏症状的用途。