| abstract |
The (R,R)-, (S,S)-, (R,S)-, (R,S)- isomers of 3- amino- 4- hydroxy-.alpha.- [[[2-(4- methoxyphenyl)-1-methylethyl]amino]methyl] -benzenemethanol (D) are disclosed, as well as an efficient method for their stereoselective synthesis. A method and composition are also disclosed utilizing desformoterol (D) as a bronchodilator, having high selectivity for .beta.2 receptors. |