amine with 5 2 3 epoxy propoxy 3 4 dihydrocarbostyril for example the compound 5 2 hydroxy 3 3 4 dimethoxy phenethylamino propoxy 3 4 dihydrocarbostyril is prepared as illustrated in the following reaction scheme str7 as shown in the above reaction scheme the compound 5 2 hydroxy 3 3 4 dimethoxy phenethylamino propoxy 3 4 dihydrocarbostyril i is prepared by reacting 3 4 dimethoxy phenethylamine and 5 2 3 epoxy propoxy 3 4 dihydrocarbostyril the epoxide is prepared by the reaction of 5 hydroxy 3 4 dihydrocarbostyril y tamura et al chem ind 1435 1970 and epichlorohydrin in dmf in the presence of nah this method gives a better quality of the epoxide than described by k nakagawa et al in the journal of medicinal chemistry 17 529 1974 3 4 dimethoxyphenethylamine is commercially available 4 2 amino ethoxy benzamide can be prepared by the use of one of the following methods using standard synthetic techniques from commercially available starting materials str8 in order to illustrate the synthesis and pharmacological activity of the new drugs reference is made to the following examples these examples are not to be construed as the only preparatory procedures and are not intended to limit the invention in any respect a mixture of freshly distilled 3 4 dimethoxy phenethylamine 1 27.