PREPARATION OF PURE 3-ALKOXYMETHYL CEPHALOSPORINS.

摘要

The present invention relates to an improved and industrially advantageous process for the preparation of pure 7-amino-3-alkoxymethyl-3-cephem-4-carboxylic acids, and salts thereof. In particular, the present invention relates to a process for the preparation of pure 7-amino-3-methoxymethyl-3-cephem-4-carboxylic acid (7-AMCA) and salts thereof.