PROCESS FOR THE PREPARATION OF (1R,4R)-6'-FLUORO-(N,N-DIMETHYL- AND N-METHYL)-4-PHENYL-4',9'-DIHYDRO-3'H-SPIRO[CYCLOHEXANE-1,1'-PYRANO-[3,4,B]INDOL]-4-AMINE

摘要

The present invention relates to a process for the preparation of (1r,4r)-6'-fluoro-N,N-dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4b]indol]-4-amine and (1r,4r)-6'-fluoro-N-methyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4b]- indol]-4-amine or physiologically acceptable acid addition salts thereof.