申请人:Pfizer Inc.
公开号:US05859044A1
公开(公告)日:1999-01-12
The present invention relates to certain compounds of the formula (I) the racemic-enantiomeric mixtures and optical isomers of said compounds, prodrugs thereof and the pharmaceutically acceptable salts, depicted below, which are .beta.-adrenergic receptor agonists and accordingly have utility as, inter alia, hypoglycemic and antiobesity agents. The invention also relates to methods of use for the compounds and to compositions containing them. The compounds of the present invention also possess utility for increasing lean meat deposition and/or improving the lean meat to fat ratio in animals, e.g., ungulate animals, companion animals, especially dogs, and poultry. The compounds of formula (I) have the following structure ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in the specification.
本发明涉及某些化合物的结构式(I),其为该化合物的消旋-对映体混合物和光学异构体,以及它们的前药和药用盐,如下所示,它们是β-肾上腺素受体激动剂,因此具有作为降糖和抗肥胖剂等用途。该发明还涉及该化合物的使用方法和含有它们的组合物。本发明的化合物还具有增加瘦肉沉积和/或改善动物(如有蹄动物、伴侣动物,尤其是狗,和家禽)的瘦肉与脂肪比例的作用。结构式(I)的化合物具有以下结构
其中R1、R2、R3、R4和R5如规范中所定义。