The present invention relates to an improved process for the preparation of cephalosporin antibiotics of formula (I). The present invention also provides new salts of compound of formula (II) and a process for the preparation of these new salts, where n=0.5 to 2. The present invention also provides a process for the preparation of compound of formula (I) using the new salts of formula (II).
本发明涉及一种改进的制备式(I)
头孢菌素类抗生素的方法。本发明还提供了式(II)化合物的新盐,并提供了制备这些新盐的方法,其中n=0.5至2。本发明还提供了使用式(II)的新盐制备式(I)化合物的方法。