title: Penems: conception and evolution of a new class of beta-lactam antibiotics.
authors.affiliation: Ricerca e Sviluppo, Linea Antiinfettivi, Farmitalia Carlo Erba, Milano, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Perrone
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D055598:Chemical Phenomena; D002621:Chemistry; D047090:beta-Lactams
chemical_list: D000900:Anti-Bacterial Agents; D047090:beta-Lactams