2-oxo-1-azetidinesulfonic acid derivatives, process for production thereof, and use thereof

Abstract From the Canadian patent

An optically active compound represented by the following formula, ... (1), wherein R represents a group selected from the class consisting of linear or branched C1-C4 alkyl groups, C3-C4 alkenyl groups C3-C4 alkynyl groups, a carboxy-substituted methyl group, a cyano-substituted methyl group C3-C6 cycloalkyl groups which may be substituted by carboxy, carboxy-substituted C1-C5 alkyl groups, a benzyl group and a phenyl group and a pharmaceutically acceptable salt thereof; a process for producing the same; and their use as antibacterial agents.