Zilpaterol Enantiomer Compositions and Methods of Making and Using Such Compositions
申请人:Miculka Christian
公开号:US20100022490A1
公开(公告)日:2010-01-28
This invention is directed generally to zilpaterol enantiomer compositions and, in particular, to compositions comprising the 6R,7R zilpaterol enantiomer. This invention is also directed to processes for making such compositions; methods for using such compositions to, for example, increase the rate of weight gain, improve feed efficiency, and/or increase carcass leanness in livestock, poultry, and/or fish; and uses of such compositions to make medicaments. This invention is further directed to methods for determining the absolute configurations of zilpaterol enantiomers.
The β-adrenergic agonist 1 (zilpaterol) is used as production enhancer in cattle. Binding experiments of separated enantiomers on recombinant human β2-adrenergic and μ-opioid receptors and functional studies showed that the (−)-1 enantiomer accounts for essentially all the β2-adrenergic agonist activity and that it exhibits less affinity toward the μ-opioid receptor than (+)-1, which is a μ-opioid