Abstract
A new 3-phenyl-2-thioquinazoline derivatives have been synthesized by the reaction of hydrazide 1 with formic acid and diethylmalonate I to give 2 and 3, n spectively. Compound 1 is reacted with sugar to give the sugar hydrazone (4a-c) which is converted to oxadiazole derivatives (5a-c). The final compounds (6a-c) were obtained by reacting the hydrazones 4a-c with acetic anhydride in pyridine.