title: Nuclear analogues of beta-lactam antibiotics. 4. Total synthesis of bisnorisopenicillins from beta-lactam precursors.
mesh_terms: D008722:Methods; D008826:Microbial Sensitivity Tests; D010406:Penicillins / Q000138:chemical synthesis* / Q000494:pharmacology; D047090:beta-Lactams
chemical_list: D010406:Penicillins; D047090:beta-Lactams