title: [New beta-lactam antibiotics. Preparation by decarbonylation of esters of 3-formylcephem compounds].
mesh_terms: D002511:Cephalosporins / Q000138:chemical synthesis*; D007536:Isomerism; D008722:Methods; D047090:beta-Lactams / Q000138:chemical synthesis
chemical_list: D002511:Cephalosporins; D047090:beta-Lactams
vernacular_title: Neue beta-Lactam-Antibiotika. Uber die Darstellung und Decarbonylierung von 3-Formylcephem-Verbindungen