A process and intermediate compounds for the preparation of 3-ethyl-5-methyl-2-2'-(aminoethoxy)-methyl-4-2''- (chloro)-phenyl-6-methyl-1,4-di-hydro-pyridine-3,5-di- carboxylate benzenesulfonic acid salt benzene sulphonate

摘要

A subject matter of the invention is a process for preparing 3-[ethyl]-5-[methyl]-2-[2'-(aminoethoxy)-methyl]-4-[2''- (chloro)-phenyl]-6-[methyl]-1,4-di-[hydro]-pyridine-3,5-di- [carboxylate] benzenesulfonic acid salt of Formula in which 3-[ethyl]-5-[methyl]-2-[2'-(yl)-ethoxy-methyl]-4-[2''-(chloro)- phenyl]-6-[methyl]-1,4-di-[hydro]-pyridine-3,5-di-[carboxylate] hexaminium iodide of Formula is reacted with benzenesulfonic acid of Formula Several variants comprise also reactions for preparing intermediates leading to the said end product. A further subject matter of the invention are intermediates for preparing the said end product.