1,2,4-Triazolo[4,3-c]pyrimidines substituted at the 5 or 7 position through a nitrogen atom which is part of a heterocyclic ring have been found to have potent bronchodilator activity and to be useful synthetic intermediates in the preparation of 1,2,4-triazolo[1,5-c]pyrimidines. Methods for inducing bronchodilation, pharmaceutical compositions, and synthetic processes and intermediates are also described.
在异环环上的一个氮原子通过5或7位置取代的
1,2,4-三唑并[4,3-c]
嘧啶已被发现具有强效的支气管扩张活性,并可用作合成
1,2,4-三唑并[1,5-c]
嘧啶的有用中间体。还描述了诱导支气管扩张的方法、制药组合物以及合成过程和中间体。