This invention relates to a compound of formula I:
or a pharmaceutically acceptable salt thereof. Such compounds possess both muscarinic receptor antagonist and β
2
adrenergic receptor agonist activities. The invention also relates to pharmaceutical compositions comprising such compounds, processes and intermediates for preparing such compounds, and methods of using such compounds as bronchodilating agents to treat pulmonary disorders.
本发明涉及公式I的化合物或其药学上可接受的盐。此类化合物具有毒蕈碱受体拮抗剂和β2
肾上腺素受体激动剂活性。本发明还涉及包含此类化合物的制药组合物,制备此类化合物的过程和中间体,以及将此类化合物用作支气管扩张剂治疗肺部疾病的方法。