process for the production of 7 - (replaced:) amino - 3 - replaced: - thiomethyl - delta3 - cephem - 4 - carbonsaeuren

摘要

This disclosure relates to a novel process for producing 7-(substituted)-amino-3-substituted thiomethyl- DELTA 3-cephem-4-carboxylic acids which are intermediate products of cephalosporins being valuable antibacterial compounds for use in mammals including man.