title: Anticoccidial derivatives of 6-azauracil. 3. Synthesis, high activity, and short plasma half-life of 1-phenyl-6-azauracils containing sulfonamide substituents.
abstract: A series of 1-phenyl-6-azauracils containing sulfonamide substituents was prepared. In contrast to previous 1-phenyl-6-azauracils, some of these sulfonamides combine high activity against Eimeria tenella infections in chickens with a very rapid rate of clearance from plasma. Most active was 1-[3'-chloro-5'-methyl-4'-(morpholinylsulfonyl)phenyl]-6-azauracil, with a minimum effective concentration in feed of about 10 ppm.
mesh_terms: D000818:Animals; D002645:Chickens; D003048:Coccidiosis / Q000188:drug therapy; D003049:Coccidiostats / Q000138:chemical synthesis*; D006207:Half-Life; D008297:Male; D013329:Structure-Activity Relationship; D013449:Sulfonamides / Q000138:chemical synthesis; D014498:Uracil / Q000031:analogs & derivatives* / Q000097:blood / Q000138:chemical synthesis / Q000494:pharmacology
chemical_list: D003049:Coccidiostats; D013449:Sulfonamides; D014498:Uracil; C100248:azauracil