Chemical transformations of penicillins and cephalosporins. Mechanism and stereochemistry of the interconversions of penam and cepham systems.
D002511:Cephalosporins / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D008722:Methods; D010406:Penicillins / Q000138:chemical synthesis*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
D002511:Cephalosporins; D010406:Penicillins