title: Pteridine studies. 43. Reactions of pteridine with some Michael reagents.
mesh_terms: D003500:Cyclization; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D011621:Pteridines / Q000138:chemical synthesis*; D013056:Spectrophotometry, Ultraviolet; D013871:Thiones / Q000138:chemical synthesis
chemical_list: D011621:Pteridines; D013871:Thiones