The invention is concerned with a new scalable process for the preparation of compounds of formula I comprising a new process for the preparation of the key intermediate, a dihydropyrrole derivative formula II or a salt thereof.
这项发明涉及一种新的可扩展过程,用于制备化合物I,包括一种用于制备关键中间体二氢
吡咯衍
生物化合物II或其盐的新过程。