title: Some aspects of the chemistry of penicillin.
mesh_terms: D002511:Cephalosporins / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D008722:Methods; D010084:Oxidation-Reduction; D010406:Penicillins / Q000138:chemical synthesis; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D002511:Cephalosporins; D010406:Penicillins