Piperazine derivative

Details Piperazine derivative Piperazine derivative

C - Chemistry, Metallurgy

07

D

C07D 295/155 (2006.01) A61K 31/495 (2006.01) C07D 241/04 (2006.01) C07D 401/12 (2006.01) C07D 403/12 (2006.01) C07D 405/12 (2006.01)

Patent

CA 2172183

The present invention provides a piperazine derivative of the following formula or a pharmacologically acceptable salt thereof Image (I) 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.

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