title: 5-substituted quinazoline antifolates.
mesh_terms: D005493:Folic Acid Antagonists; D011799:Quinazolines / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D013940:Thymidylate Synthase / Q000037:antagonists & inhibitors
chemical_list: D005493:Folic Acid Antagonists; D011799:Quinazolines; D013940:Thymidylate Synthase