This invention relates to a method for preparing tetrafluorobenzyl-5-aminosalicylic acid derivative and its pharmaceutically acceptable salt compounds. In particular, this invention relates to a method for preparing tetrafluorobenzyl-5-aminosalicylic acid derivative and its pharmaceutically acceptable salts by using tetrafluorobenzilidine-5-aminosalicylic acid derivative as an intermediate.
本发明涉及一种制备
四氟苯甲基-
5-氨基水杨酸衍
生物及其药学上可接受的盐化合物的方法。特别地,本发明涉及一种使用
四氟苯甲基亚甲基-
5-氨基水杨酸衍
生物作为中间体制备
四氟苯甲基-
5-氨基水杨酸衍
生物及其药学上可接受的盐的方法。