申请人:The Dow Chemical Company
公开号:US04526890A1
公开(公告)日:1985-07-02
3,6,7,8-Substituted-s-triazolo-pyridazine compounds such as 7,8-dimethyl-6-morpholino-3-methyl-s-triazolo[4,3-b]pyridazine or 7,8-dimethyl-6-(1-pyrrolidinyl)-3-(isopropyl)-s-triazolo-[4,3-b]pyridazine are prepared by the reaction of a carboxylic acid with a substituted 3-hydrazino-6-halo-pyridazine followed by the reaction of the resulting 6-halotriazolopyridazine with a corresponding base. The compounds have pharmacological activity as bronchodilators.
3,6,7,8-取代-s-三唑吡啶化合物,如7,8-二甲基-6-吗啉基-3-甲基-s-三唑[4,3-b]吡啶或7,8-二甲基-6-(1-吡咯烷基)-3-(异丙基)-s-三唑-[4,3-b]吡啶,通过羧酸与取代的3-叠氮基-6-卤代吡啶的反应制备,然后通过所得的6-卤代三唑吡啶与相应的碱的反应制备。这些化合物具有支气管扩张剂的药理活性。