cephalosporins, in the place of 3 a replaced: vinylradikal, methods for their production, their use as medicines and their preparations containing them and interconnection.

摘要

Products of formula (I): …IMAGE… syn isomer… in which:… R = H, alkyl, alkenyl, alkynyl or cycloalkyl, optionally substituted, …IMAGE… A = H, alkali metal, alkaline-earth metal, magnesium, organic base or CO2A = CO2- and their salts, process for their preparation, their application as medications, compositions containing them and the new intermediates obtained.