PROCESS FOR THE PREPARATION OF STRONTIUM RANELATE

摘要

The present invention relates to a process for the synthesis of distrontium 5-[bis(2-oxido-2-oxoethyl)amino]-4-cyano-3-(2-oxido-2-oxoethyl)thiophene-2-carboxylate (strontium ranelate) of formula (I) starting from tetraammonium 5-[bis(2-oxido-2-oxoethyl)amino]-4-cyano-3-(2-oxido-2-oxoethyl)thiophene-2-carboxylate the novel compound of formula (II) which is also the subject of the invention.