10.1002/jhet.5570230631
The research focuses on the synthesis of novel 2,4,6-trisubstituted thieno[3,2-d]pyrimidines, which are of interest due to their potential biochemical significance and isosteric relationship with purines. The study explores the conversion of previously unknown 3-amino-5-methyl(or 5-phenyl)thiophene-2-carbonitriles into thieno[3,2-d]pyrimidines through a series of chemical reactions. Key chemicals used in the process include mercaptoacetonitrile, substituted acetylenic nitriles, various amines, orthoesters, and sodium ethoxide, among others. The conclusions drawn from the research highlight the successful synthesis of several trisubstituted thienopyrimidines and their potential as growth inhibitors against murine leukemic cell lines, with the 2,4-diamino derivative 30 showing the most activity. The study also compares different synthetic approaches and provides insights into the biological evaluation of these compounds.