The present invention relates to a new method for the preparation of (3S,3S') 4,4'-disulfanediylbis(3-aminobutane 1-sulfonic acid) in five steps from (S)-ethyl 2-(benzyloxycarbonylamino)-4-(neopentyloxysulfonyl)butanoate A.
本发明涉及一种从(S)-乙基2-(苄氧羰
氨基)-4-(新戊氧磺酰基)
丁酸酯A经过五个步骤制备(3S,3S') 4,4'-二
硫代双(3-
氨基
丁烷-1-
磺酸)的新方法。