| abstract |
An azetidin-2-one derivative represented by the following formula (I)wherein R' represents a hydrogen atom, a lower alkyl group, an aryl group, an aralkyl group, a lower alkoxy group, aralkoxy group, a lower alkylthio group, an aralkylthio group, or a substituted amino group, R<sup>2</sup> represents a hydrogen atom, a lower alkyl group, an aryl group or an aralkyl group, and R<sup>3</sup> represents a hydrogen atom or a group of the formulaIn which R<sup>4</sup> represents a hydrogen atom or a protective group for the hydroxyl group; and a process for production thereof. |