申请人:Merck & Co., Inc.
公开号:US03995039A1
公开(公告)日:1976-11-30
Novel pyrazolo [1,5-a] [1,3,5] triazines are provided which are active agents to inhibit bronchial constriction with very low chronotropic effects. The novel compounds are prepared by the reaction of an appropiately substituted 1-amidino-5-amino pyrazole with an appropriately substituted trialkyl orthoester. Suitable compositions for utilizing this bronchodilating activity by administration to humans are also disclosed.
提供了新型吡唑并[1,5-a][1,3,5]三嗪类化合物,它们是抑制支气管收缩的活性剂,具有非常低的心脏搏动效应。这些新型化合物是通过适当取代的1-酰胺基-5-氨基吡唑与适当取代的三烷基正酯反应制备而成。还公开了适合通过向人体给药来利用这种支气管扩张活性的组合物。