title: Transformations of penicillin. Part 8. Preparation of 2-acetylceph-3-em derivatives from carboxy-protected penicillin S-oxides.
mesh_terms: D000107:Acetylation; D002264:Carboxylic Acids; D002511:Cephalosporins / Q000138:chemical synthesis*; D008722:Methods; D010406:Penicillins; D013454:Sulfoxides
chemical_list: D002264:Carboxylic Acids; D002511:Cephalosporins; D010406:Penicillins; D013454:Sulfoxides