The invention relates to new and improved processes for the preparation of Indacaterol and pharmaceutically acceptable salts thereof as well as intermediates for the preparation of Indacaterol. The new process avoids the use of the epoxide compound known in the art and the impurities associated therewith and results in a higher yield.
本发明涉及制备
茚达特罗及其药学上可接受的盐类以及制备
茚达特罗的中间体的改进型新工艺。新工艺避免了使用本领域已知的
环氧化物化合物以及与之相关的杂质,从而提高了产率。