METHOD FOR PREPARING SILODOSIN USING NOVEL INTERMEDIATE

摘要

The present invention relates to a novel intermediate, and a novel method for preparing silodosin using the intermediate. More particularly, the present invention relates to a novel method for preparing silodosin and a novel intermediate compound used in the preparation method, the method comprising: reacting a compound expressed by Chemical Formula 3 or a pharmaceutically acceptable salt thereof with a compound expressed by Chemical Formula 4 to obtain a compound expressed by Chemical Formula 2; and aminolyzing the latter compound to provide a compound expressed by Chemical Formula 1.