申请人:Takeda Chemical Industries, Ltd.
公开号:EP0381132A1
公开(公告)日:1990-08-08
The imidazo[1,2-b]pyridazine compounds of the formula:
wherein R₁ is a hydrogen or halogen atom, or a lower alkyl group optionally having substituent(s), R₂ and R₃ are, independently, a hydrogen atom, a lower alkyl group optionally having substituent(s), a cycloalkyl group or a phenyl group optionally having substituent(s) or R₂ and R₃ together with the adjacent nitrogen atom to which they bond may form a heterocyclic ring optionally having substituent(s), X is an oxygen atom or S(O)n (n = 0 to 2), Alk is a straight or branched chain alkylene group containing 1 - 10 carbon atoms and optionally having substituent(s), or their pharmaceutically acceptable salts which possess antiallergic, anti-inflammatory and anti-PAF activities, and their production and use.
式中的咪唑并[1,2-b]哒嗪化合物:
其中 R₁ 是氢原子或卤素原子,或任选具有取代基的低级烷基,R₂ 和 R₃ 独立地是氢原子、任选具有取代基的低级烷基、环烷基或任选具有取代基的苯基,或 R₂ 和 R₃ 与它们键合的相邻氮原子可形成任选具有取代基的杂环、X 是氧原子或 S(O)n(n=0-2),Alk 是直链或支链亚烷基,含 1-10 个碳原子,可选具有取代基,或其药学上可接受的盐类,具有抗过敏、抗炎和抗PAF 活性,及其生产和使用。