The invention provides novel .beta..sub.2 adrenergic receptor agonist compounds. The invention also provides pharmaceutical compositions comprising such compounds, methods of using such compounds to treat diseases associated with .beta..sub.2 adrenergic receptor activity, and processes and intermediates useful for preparing such compounds.

A invenção fornece compostos adrenergic do agonist do receptor do beta..sub.2 da novela. A invenção fornece também as composições pharmaceutical que compreendem tais compostos, métodos de usar tais compostos tratar as doenças associadas com a atividade adrenergic do receptor do beta..sub.2, e processos e intermediários úteis para preparar tais compostos.