title: Nuclear analogues of beta-lactam antibiotics. I. the total synthesis of a 7-oxo-1,3-diazabicyclo[3.2.0]heptane-2-carboxylic acid via a versatile monocyclic beta-lactam intermediate.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D001643:Bridged Bicyclo Compounds / Q000138:chemical synthesis*; D001952:Bridged-Ring Compounds / Q000138:chemical synthesis*; D002264:Carboxylic Acids / Q000138:chemical synthesis; D003508:Cycloheptanes / Q000138:chemical synthesis; D008722:Methods; D047090:beta-Lactams
chemical_list: D000900:Anti-Bacterial Agents; D001643:Bridged Bicyclo Compounds; D001952:Bridged-Ring Compounds; D002264:Carboxylic Acids; D003508:Cycloheptanes; D047090:beta-Lactams