In order to find more effective antitumor drugs, a series of novel 2,4-substituted pyrimidine derivatives containing trifluoromethyl were designed, synthesized, and evaluated for antitumor activity aganist EC-109 (human esophageal cancer cell), MGC-803 (human gastric cancer cell), PC-3 (human prostate cancer cell) and HepG-2 (human liver cancer cell). The results showed that some compounds displayed moderate to potent antitumor activity against PC-3. Among them, 2-(((4-((1methyl-1H-tetrazol-5-yl)thio)-6-(trifluoromethyl)pyrimidin-2-yl)thio)methyl)benzo[d]thiazole (13w) possesses strong antitumor activity against PC-3 with IC 50 value of 1.76 µmol•L-1 , and the antitumor activity is significantly better than the positive control drug of 5-fluorouracil.
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