title: Purine studies. VII. The synthesis of purines as amplifiers of phleomycin against E. coli.
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000494:pharmacology*; D002110:Caffeine / Q000494:pharmacology; D004357:Drug Synergism; D004926:Escherichia coli / Q000187:drug effects*; D007700:Kinetics; D010455:Peptides / Q000494:pharmacology; D011687:Purines / Q000138:chemical synthesis* / Q000494:pharmacology; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship
chemical_list: D000903:Antibiotics, Antineoplastic; D010455:Peptides; D011687:Purines; D002110:Caffeine