发明公开
EP1103555A1 Process for the production of a 3-cephem-4-carboxylic acid derivative 失效
Verfahren zur Herstellung von einem 3-Cephem-4-Carbonsäurederivat

Process for the production of a 3-cephem-4-carboxylic acid derivative
摘要:
The invention relates to a new process for the production of pharmaceutically active cephalosporines by depletion of 7-amino-3-[(E)-1-propen-1-yl]-3- cephem-4-carboxylic acid in mixtures of 7-amino-3-[(Z)-1-propen-1-yl]-3- cephem-4-carboxylic acid and 7-amino-3-[(E)-1-propen-1-yl]-3-cephem-4-carboxylic acid, by means of a metal or amine salt of 7-amino-3-[(Z/E)-1-propen-1-yl]-3-cephem-4-carboxylic acid.
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