The present invention provides dibenzylamine salt of Lifitegrast (XV), and diphenylamine salt of Lifitegrast (XVI) and the use of the above salts in the purification process of Lifitegrast (I). The present invention relates to a process for the preparation of Lifitegrast (I).
本发明提供了利非替格拉司特(XV)的
二苄胺盐和利非替格拉司特(XVI)的
二苯胺盐,以及上述盐在利非替格拉司特(I)的纯化过程中的使用。本发明涉及一种制备利非替格拉司特(I)的方法。