title: 2,4-diaminopyrimidines. The cyclization of 6-phenacylthio and related derivatives to thieno[2,3-d]pyrimidines and thiazolo[3,2-c]pyrimidines.
mesh_terms: D000818:Animals; D001665:Binding Sites; D004578:Electron Spin Resonance Spectroscopy; D004926:Escherichia coli / Q000201:enzymology; D005493:Folic Acid Antagonists; D066298:In Vitro Techniques; D008099:Liver / Q000201:enzymology; D011743:Pyrimidines / Q000138:chemical synthesis*; D051381:Rats; D013053:Spectrophotometry; D014466:Ultraviolet Rays
chemical_list: D005493:Folic Acid Antagonists; D011743:Pyrimidines