Yttria-Zirconia–Based Lewis Acid Catalysis of the Biginelli Reaction: An Efficient One-Pot Synthesis of 3,4-Dihydropyrimidin-2-(1<i>H</i>)-ones
作者:S. Ramalingam、Pradeep Kumar
DOI:10.1080/00397910802519174
日期:2009.3.10
Abstract Yttria-zirconia–based Lewis acid efficiently catalyzes the three-component cyclocondensation reaction of aldehyde, β-keto ester, and urea or thiourea in refluxing acetonitrile to produce the corresponding dihydropyrimidones in high yields.
Design, synthesis and chemoinformatic studies of new thiazolopyrimidine derivatives as potent anticancer agents via phosphodiesterase-5 inhibition and apoptotic inducing activity
作者:Mohamed T.M. Nemr、Mohamed Teleb、Asmaa M. AboulMagd、Mostafa E. El-Naggar、Noha Gouda、A.A. Abdel-Ghany、Yaseen A.M.M. Elshaier
DOI:10.1016/j.molstruc.2022.134216
日期:2023.1
respectively in comparison to sildenafil (IC50 0.689 nM). Moreover, compounds 3a, 3c, 3f, 3g, 3h were found to have potent cytotoxic activities against MCF-7 cancer cell line with IC50 ranging from 5.47±0.4 to 9.92±0.9 µM. Apoptosis cytometric assay showed that compound 5a induced pronounced increase in the total percent of apoptotic HCT116 cells (15.87%) compared to 3c (12.43%), mainly during late stage