Novel benzo [5,6] cyclohepta [1,2-b] pyridine derivatives and antiallergic agents comprising same
申请人:SS PHARMACEUTICAL CO., LTD.
公开号:EP0495484A1
公开(公告)日:1992-07-22
Benzo[5,6]cyclohepta[1,2-b]pyridine derivatives of the following formula:
wherein R¹ represents a cyano, carbamoyl, alkylsulfoxy, alkylsulfonyl, tetrazolyl or sulfonic acid group, and R² represents a hydrogen atom, a cyano, phenyl, aralkyl, alkoxycarbonylalkyl, aminoalkylcarbamoylalkyl or lower alkyl group, or a group
or -X-R₄, X being an oxygen or sulfur atom, R³ standing for a hydrogen atom or a substituted or unsubstituted lower alkyl, phenyl or aralkyl group, and R⁴ being a substituted or unsubstituted lower alkyl, phenyl or aralkyl group or an aminoalkyl group, and salts thereof. Antiallergic and antihistamic agents containing one of the above derivatives or salts as an active ingredient are also described.