Synthesis of some new heterocycles derived from ethyl 7-amino-3-(3-methyl- 5-oxo-1-phenyl-2-pyrazolin-4-yl)-5-aryl-5h-thiazolo[3,2-a]pyrimidine-6- carboxylate of biological importance

摘要

Ethyl 7-amino-3-(3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)-5-aryl-5H- thiazolo[3,2-a]pyrimidine-6-carboxylate was synthesized by the reaction of 4-(2-aminothiazol-4-yl)-3-methyl-5-oxo-1-phenyl-2-pyrazoline with arylidene ethyl cyanoacetate and it transformed to related fused heterocyclic systems via reaction with various reagents. The biological activities of these compounds were evaluated.