Add time:07/13/2019         Source:sciencedirect.com

Mexiletine [1-(2,6-dimethylphenoxy)-2-aminopropane], an orally effective antiarrhythmic agent, exhibits enantioselective pharmacokinetics and pharmacodynamics during mexiletine therapy. The purpose of this paper is to emphasize the advantage of tetrahydropyranyl-protected mandelic acid (THPMA) in the resolution of mexiletine enantiomers. Both enantiomers of mexiletine were obtained in 99% enantiomeric excess. Judging by the differential shielding effects in the 1H and 13C NMR analyses, we have observed the opposite predominant conformation for the mexiletine mandelates in comparison with the O-methylmandelates.

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