Xanthine derivatives having antiallergic activity and pharmacological preparations containing them
申请人:Aktiebolaget DRACO
公开号:EP0001735A1
公开(公告)日:1979-05-02
Compounds having antiallergic activity, characterized by the formula
wherein R' is methyl, ethyl or n-propyi, R2 is methyl or n-propyl and R3 is
or a physiologically acceptable salt thereof.