title: Total synthesis of beta-lactamase inhibitors based on the 4-oxa-1-aza-bicyclo[3.2.0]heptan-7-one ring system.
mesh_terms: D007769:Lactams; D065093:beta-Lactamase Inhibitors; D047090:beta-Lactams / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D007769:Lactams; D065093:beta-Lactamase Inhibitors; D047090:beta-Lactams; C027434:4-oxa-1-azabicyclo(3.2.0)heptan-7-one