Beta-lactam antibacterial agents, their pharmaceutical compositions and process for their preparation

• Main Author: PEARSON, MICHAEL JOHN
• Format: Patent
• Language: English; French; German
• Published: 19.09.1979
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

The compounds of the formula (I): (I) wherein R1 is a hydrogen atom, a trityl group or an acyl group as found in known antibacterially active penicillins or cephalosporins; R2 is a hydrogen atom, a lower alkyl group or an aryl group; R3 is a hydrogen atom, a lower alkyl group, a substituted lower al...