METHOD FOR CLEANING 3-HYDROXYAMIDINOPHENYLALANINE DERIVATIVES BY THE PRECIPITATION AND RECRYSTALLIZATION OF SALT AND AN AROMATIC SULFONIC ACID

摘要

METHOD FOR CLEANING 3-HYDROXYAMIDINOPHENYLALANINE DERIVATIVES BY THE PRECIPITATION AND RECRYSTALLIZATION OF SALT AND AN AROMATIC SULFONIC ACIDAbstract The present invention relates to the preparation of 3-hydroxyamidino-phenylalanine derivatives in highly pure form which can be used forexample as urokinase inhibitors. The present invention further relates to the use of high-purity 3-hydroxyamidinophenylalanine derivatives for preparing 3-amidinophenylalanine derivatives.No suitable figure