title: Studies related to penicillins and cephalosporins. Part IV. Synthesis of methyl 7-phthalimido-6,7-trans-DL-cepham-4-carboxylate.
mesh_terms: D002511:Cephalosporins; D055598:Chemical Phenomena; D002621:Chemistry; D007769:Lactams / Q000138:chemical synthesis; D010406:Penicillins; D010797:Phthalimides
chemical_list: D002511:Cephalosporins; D007769:Lactams; D010406:Penicillins; D010797:Phthalimides