The present invention provides a piperazine derivative of the following formula or a pharmacologically acceptable salt thereof
wherein R1 represents a benzene ring, naphthalene ring, quinoline ring, indole ring or chroman ring that may be substituted by lower alkyl, lower alkoxy and/or hydroxy; R2 and R3 independently represent hydrogen or lower alkyl.
The compound of the present invention has potent antiallergic activity and can therefore be used with advantage in the treatment of various allergic diseases.
本发明提供了下式的
哌嗪衍
生物或其药理学上可接受的盐
其中 R1 代表可被低级烷基、低级烷氧基和/或羟基取代的苯环、
萘环、
喹啉环、
吲哚环或
铬环;R2 和 R3 独立地代表氢或低级烷基。
本发明的化合物具有很强的抗过敏活性,因此可用于治疗各种过敏性疾病。