title: Specific enzyme inhibitors in vitamin biosynthesis. II. Revised structures for some 8-substituted pyrido(2,3-d)pyrimidines.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D010782:Photolysis; D011621:Pteridines; D011725:Pyridines / Q000138:chemical synthesis / Q000494:pharmacology; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000494:pharmacology; D012256:Riboflavin; D013329:Structure-Activity Relationship; D014166:Transferases / Q000037:antagonists & inhibitors*; D014815:Vitamins / Q000096:biosynthesis*
chemical_list: D011621:Pteridines; D011725:Pyridines; D011743:Pyrimidines; D014815:Vitamins; D014166:Transferases; D012256:Riboflavin