HIGH PURITY (1R,2S,4R)-(-)-2-(2'-{N,N-DIMETHYLAMINO}-ETHOXY)-2-PHENYL-1,7,7-THR-METHYL-BICYCLO2.2.1. HEPTANE AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF AND A PROCESS FOR THE PREPARATION OF THESE COMPOUNDS AS WELL AS MEDICAMENTS CONTAINING ONE OR MORE OF THESE COMPOUNDS AND THEIR USE

摘要

The invention relates to a process for preparing (1R,2S,4R)-(-)-2-Ä(2'-äN,N-dimethylaminoü-ethoxy)Ü-2--ÄphenylÜ-1,7,7-t ri-ÄmethylÜ-bicycloÄ2.2.1Üheptane and pharmaceutically acceptable acid addition salts thereof with higher yields and higher grades of purity.