title: Pyridopyrimidines.7. Ribonucleosides structurally related to the antitumor antibiotic sangivamycin.
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D007536:Isomerism; D008722:Methods; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis*; D012263:Ribonucleosides / Q000138:chemical synthesis*
chemical_list: D000903:Antibiotics, Antineoplastic; D011741:Pyrimidine Nucleosides; D012263:Ribonucleosides; C005699:sangivamycin