| abstract |
The present invention relates to certain compounds of the formula (I) thenracemic-enantiomeric mixtures and optical isomers of said compounds,nprodrugs thereof and the pharmaceutically acceptable salts, depicted below,nwhich are β-adrenergic receptor agonists and accordingly have utility as, internalia, hypoglycemic and antiobesity agents. The invention also relates tonmethods of use for the compounds and to compositions containing them. Thencompounds of the present invention also possess utility for increasing leannmeat deposition and/or improving the lean meat to fat ratio in animals, e.g.,nungulate animals, companion animals, especially dogs, and poultry. Thencompounds of formula (I) have the following structuren nwherein R 1 , R 2 , R 3 , R 4 and R 5 are as defined in the specification. |