There are disclosed certain α-heterocyclic ethanolamine derivatives wherein the amine is substituted with various alkyl, alkenyl or alkynyl groups optionally substituted with hydroxy or alkoxy groups. The compounds are potent β-agonists and are thus useful as growth promotion agents for animals. Compositions for such uses are also disclosed.
The instant invention concerns certain .alpha.-heterocyclic ethanol amines wherein the amine group is substituted with various alkyl and unsaturated alkyl groups optionally further substituted with hydroxy, or alkoxy groups of the formula: ##STR1## These compounds are useful as growth promotion agents in animals.