61964-70-3Relevant articles and documents
Chemical modification of sulfazecin. Synthesis of 4-methoxycarbonyl-2-azetidinone-1-sulfonic acid derivatives
Kishimoto,Sendai,Tomimoto,Hashiguchi,Matsuo,Ochiai
, p. 2646 - 2659 (2007/10/02)
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Methods and intermediates for preparing cis-4-oxoazetidine intermediates
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, (2008/06/13)
The stereospecific cycloaddition of nitrogen containing acetic acid halides or anhydrides with Schiff bases having a carbalkoxy group substituted on the methine carbon atom offers new intermediates and methods for preparing synthetic cephalosporin congeners having antibacterial activity.
8-Oxo-4-thia-1-azabicyclo (4.2.0)-oct-2-ene derivatives
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, (2008/06/13)
Novel bicyclic β-lactams and intermediates useful in their preparation are disclosed. In particular, 7β-acyl-amino- and 7β-amino-8-oxo-4-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acids are prepared. The acylated compounds are antibacterial agents.