PROCESSES FOR THE PREPARATION OF THIAZOLIDINEDIONE DERIVATIVES AND INTERMEDIATES

摘要

IN/PCT/2002/01666/CHE ABSTRACT "PROCESSES FOR THE PREPARATION OF THIAZOLIDINEDIONE DERIVATIVES AND INTERMEDIATES'" The present invention is concerned with a novel process for the preparation of compounds of formula (I) comprising bromomethylation or chlorornethylation of a compound of formula (II) and subsequent reaction with a compound of formula (III). The compounds of formula (I) and the corresponding salts, eg. the sodium salts, are pharmaceutically active substances.