METHOD OF OBTAINING DERIVATIVES OF 7 BETA-AMINO-THIAZOLYLACETAMIDO - 3-CEPHEM -4-CARBONIC ASID

摘要

1. A 7 beta-aminothiazolylacetamido-3-cephem-4-carboxylic acid compound of the formula see diagramm : EP0008343,P9,F1 wherein R1 is hydrogen or an amino protective group, A is methylene substituted by methoxyimino and R2 is pivaloyloxymethyl, or a salt of such a compound containing a salt-forming group.