Synthesis, Characterization and Biological Studies of Some Novel Thieno[2,3-d]pyrimidines
作者:Khulud M. Al-Taisan、Hassan M. A. Al-Hazimi、Shar S. Al-Shihry
DOI:10.3390/molecules15063932
日期:——
Several 2-unsubstituted thieno[2,3-d]pyrimidines have been prepared from 2-aminothiophene-3-carboxylic acid esters and their carbonitrile analogs. Some triazolo-thienopyrimidine and 2-thioxothienopyrimidine representatives have also been synthesized using thermal and microwave (MW) irradiation techniques. Structures of the prepared compounds were elucidated on the basis of IR, NMR, 2D NMR and mass
A series of 2-substituted amino-3-aminocyclopenteno or cyclohexeno[b]thieno[2,3-d]-3,4-dihydropyrimidin-4-ones has been synthesized by reacting the corresponding thioureido derivatives with hydrazine hydrate. The thienoprimidine analogues obtained were further used to prepare their arylideneamino, thienotriazolopyrimidine or 2-methylthienotriazolopyrimidine derivatives. The prepared compounds were screened for antimicrobial, antiviral and cytotoxic activity. Some of the tested compounds showed promising activity. Detailed syntheses and spectroscopic and biological data are reported.