Stereoisomeric forms of n¬2-(4-carboxymethoxyphenyl) -1-methylethyl -2-hydroxy-2-(3-chlorophenyl) ethaneamine

Abstract From the Canadian patent

Novel Compounds:, N-2-(4-carboxymethoxyphenyl)-1-(R)-1-methylethyl-2- (R)-2-hydroxy-2-(3-chlorophenyl)ethanamine or the methyl ester thereof, or a pharmaceutically acceptable salt thereof, ('the RR-isomer') optionally in admixture with N-2-(4-carboxymethoxyphenyl)-1-(S)-1-methylethyl-2-(S)-2-hydroxy-2-(3-chlorophenyl)ethanamine or, the methyl ester thereof, or a pharmaceutically acceptable salt thereof, ('the SS-isomer') wherein the SS-isomer forms less than 50% by weight of the mixture of the RR- and SS- isomers; a process for preparing such compounds, pharmaceutical compositions comprising such compounds and the use of such compounds and compositions in medicine and agriculture.