High purity (1r,2s,4r)-(-)-2- ((2'-(n,n- dimethylamino) -ethoxy)) -2-(phenyl) -1,7,7-tri-(methyl) -bicyclo(2.2.1) heptane and pharmaceutically acceptable acid addition salts thereof and a process for the preparation of these compounds as well as medicaments containing 1 or more of these

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.