Conversion of penicillin to cephalosporin via a double sulfoxide rearrangement.
D002511:Cephalosporins / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D010406:Penicillins; D013454:Sulfoxides
D002511:Cephalosporins; D010406:Penicillins; D013454:Sulfoxides