1100049-66-8Relevant articles and documents
A PROCESS FOR THE PREPARATION OF 6-HYDROXY-2-(4-HYDROXYPHENYL)-3-[4-(2-PIPERIDINO ETHOXY) BENZOYL]BENZO[B]THIOPHENE
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Page/Page column 14-15, (2009/03/07)
The present invention related to a process for preparing 6-hydroxy-2-(4-hydroxyphenyl)-3-[4-(2- piperidinoethoxy)benzoyl]benzo[b]thiophene, compound of formula (I), said process comprising: deprotecting compound of formula (II) with base in dimethyl sulfoxide to yield substantially pure compound of formula (I) with HPLC purity of 99 % or more by area and optionally converting to its pharmaceutically acceptable salt.