Allenyl-Beta-Lactam-Verbindungen und Verfahren zu deren Herstellung

摘要

The present invention provides an allenyl beta -lactam compound represented by the formula (1) wherein R<1> is a hydrogen atom, halogen atom, amino or protected amino, R<2> is a hydrogen atom, halogen atom, lower alkoxyl, lower acyl, lower alkyl, lower alkyl substituted with hydroxyl or protected hydroxyl, hydroxyl or protected hydroxyl, R<1> and R<2> representing =O when taken together, R<3> is a hydrogen atom or carboxylic acid protecting group, and X is the group -SO2R<4> or the group -SR<4>, R<4> being substituted or unsubstituted aryl or substituted or unsubstituted nitrogen-containing aromatic heterocyclic group.