申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP0655448A1
公开(公告)日:1995-05-31
Benzopyran and benzoxazine derivatives represented by general formula (I) and the use thereof as a K⁺ channel activator for treating asthma, epilepsy and so forth, wherein R₁ and R₂ represent each lower haloalkyl; R₃ represents hydrogen, etc.; R₄ represents a heterocyclic group, A-O- (A being a ring structure), etc.; R₅ and R₆ represent each lower haloalkyl; and X represents =N-, N->O or (II) (R₇ and R₈ being each hydrogen, hydroxyl, etc.).
通式(I)代表的苯并吡喃和苯并噁嗪衍生物及其作为治疗哮喘、癫痫等的 K⁺ 通道激活剂的用途,其中 R₁ 和 R₂ 各自代表低级卤代烷基;R₃ 代表氢等。R₄ 代表杂环基、A-O-(A 为环状结构)等;R₅ 和 R₆ 分别代表低级卤代烷基;X 代表 =N-、N->O 或 (II) (R₇ 和 R₈ 分别为氢、羟基等)。