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  • Title: Design, synthesis and biological evaluation of novel 1,2,4-triazolo [3,4-b][1,3,4] thiadiazines bearing furan and thiophene nucleus.
    Author: Zhang B, Li YH, Liu Y, Chen YR, Pan ES, You WW, Zhao PL.
    Journal: Eur J Med Chem; 2015 Oct 20; 103():335-42. PubMed ID: 26363869.
    Abstract:
    Twenty-six novel 1,2,4-triazolo [3,4-b][1,3,4] thiadiazines containing furan and thiophene nucleus were designed, synthesized and evaluated for their antiproliferative activities. The results indicated that most of the compounds showed moderate to potent antiproliferative activities against four cancer cell lines, PC-3, HepG2, A549, and MCF-7. Particularly, compound 32 showed eleven-, three-, and two-fold improvement compared to positive control fluorouracil in inhibiting HepG2, PC-3, and A549 cell proliferation with IC₅₀ values of 5.09, 3.70 and 12.74 μM, respectively. Further flow-activated cell sorting analysis revealed that the most promising compound 32 displayed a significant effect on G2/M cell-cycle arrest in a dose-dependent manner in PC-3 cells. These encouraging results should provide important information for the development of new anticancer agents.
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