| 摘要 |
<p>The process comprises reacting the mixture consisting of 2-[phenyl(1-methyl-1H-pyrazol-5-yl)methoxy]-N,N-dimethyl-etanamine (I) with an enanthiomer of an optically active acid in order to form a diasteroisomer salt, separating said salt and releasing the enantiomer from said compound (I). The dextrorotatory enantiomer of (I) can be obtained by reacting a racemic or non racemic mixture of (I) with (')-ditoluyl-L-tartaric acid, optionally mixed with p-toluensulfonic acid. The compound (I) has analgesic properties and its most active enantiomer is the destorotatory enantiomer.</p> |
