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

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