title: [On new studies of the biosynthesis of N-heterocyclic compounds. 5. Formation and decomposition of substances with purine, pteridine, and benzopteridine ring systems].
mesh_terms: D000481:Allantoin / Q000096:biosynthesis; D002110:Caffeine / Q000096:biosynthesis; D005492:Folic Acid / Q000096:biosynthesis; D006571:Heterocyclic Compounds / Q000096:biosynthesis*; D008745:Methylation; D010084:Oxidation-Reduction; D011621:Pteridines / Q000096:biosynthesis; D011687:Purines / Q000096:biosynthesis; D011743:Pyrimidines / Q000096:biosynthesis; D013805:Theobromine / Q000096:biosynthesis
chemical_list: D006571:Heterocyclic Compounds; D011621:Pteridines; D011687:Purines; D011743:Pyrimidines; D000481:Allantoin; D002110:Caffeine; D005492:Folic Acid; D013805:Theobromine
vernacular_title: Uber neue Arbeiten zur Biosynthese N-heterocyclischer Verbindungen. 5. Bildung und Abbau von Substanzen mit Purin-, Pteridin- und Benzopteridinringsystem.