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.
本发明涉及一种制备I式化合物的新的可扩展过程,包括制备关键中间体,即二氢
吡咯衍
生物II或其盐的新过程。