A new class of cis-monobactam derivatives bearing a sulfamoyloxymethyl or an N-alkylsulfamoyloxymethyl group at position 4: synthesis and antibacterial activity.

Abstract A new series of monobactam derivatives, bearing unsubstituted or N-monosubstituted sulfamoyloxymethyl groups in position 4 was synthesized either in racemic or in optically active form. Their in vitro antibacterial activity was tested in comparison with carumonam 1a and its methoxyimino derivative 1b .