A novel and efficient method for the synthesis of 6-amino-pyrimidine-2(1H)- thiones derivatives, pyrido [2,3-d] pyrimidine-2(1H)-thiones derivatives and their glycosides

A. K. Khalafallah and M. A. Ahmed

Abstract

Simple condensation reaction of 6-amino-pyrimidine-2(1H)-thiones with aromatic aldhydes afforded 6-(arylidene-amino)-pyrimidine-2-(1H)-thiones derivatives, that react with ?-nitrostyrene to give pyrido[2,3-d] pyrimidine-2- (1H)-thiones derivatives , the latter compounds served as key intermediate for the synthesis of a new class of pyrimidine-S-glycosides by the reaction with ?bromoglucose tetracetate. Deacetylation of glycoside have been achieved The structure of the compounds were established and confirmed on the basis of their elemental analysis and spectral data.