Abstract
A series of new benzo[d][1,2,3]triazol-1-yl-pyrazole-based dihydro-[1,2,4]triazolo[4,3-a]pyrimidine derivatives 4a-p were synthesized and well characterized by using IR, 1H, 13C NMR and mass spectral data. Finally, the structure of the compound 4l was solved unambiguously by single-crystal X-ray diffraction (SXRD) which confirms all the structures 4a–p. The in vitro α-glucosidase inhibition, anticancer (A549 and MCF-7 cell lines) and antioxidant studies of the title compounds 4a–p were screened. Among all the compounds, 4g, 4h and 4n exhibited significant α-glucosidase inhibition activity with the IC50 values 20.12 ± 0.19 µM, 21.55 ± 0.46 µM and 24.92 ± 0.98 µM. Similarly, the compounds 4h, 4d and 4e showed potent anticancer activity against A549 (human lung carcinoma) cell line with IC50 values 3.64 µM, 4.73 µM and 4.56 µM, respectively, whereas the compounds 4c and 4o displayed potent anticancer activity against human breast cancer (MCF-7) cell line with IC50 values of 2.66 µM and 2.11 µM. In addition, the antioxidant activity revealed that the compounds 4e and 4h exhibited potent antioxidant activity (IC50: 4.25 µM and 5.40 µM). To determine the safety profile of the most active compounds 4c, 4d, 4e, 4g, 4h, 4n and 4o were tested against non-cancer HEK293 cell line (human embryonic kidney 293), results in the lower toxicity of these compounds.
Graphic abstract
New benzo[d][1,2,3]triazol-1-yl-pyrazole-based dihydro-[1,2,4]triazolo[4,3-a]pyrimidines were synthesized. The target compounds were showed significant α-glucosidase inhibition, anticancer and antioxidant activities.
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Acknowledgements
SB thanks the Council of Scientific and Industrial Research (CSIR) (02(0300)/17/EMR-II), India, for financial support. VP thanks the MHRD, India, for providing research fellowship. The authors SB and VP thank the Director, National Institute of Technology, Warangal for providing research facilities.
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Pogaku, V., Krishnan, R. & Basavoju, S. Synthesis and biological evaluation of new benzo[d][1,2,3]triazol-1-yl-pyrazole-based dihydro-[1,2,4]triazolo[4,3-a]pyrimidines as potent antidiabetic, anticancer and antioxidant agents. Res Chem Intermed 47, 551–571 (2021). https://doi.org/10.1007/s11164-020-04285-7
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DOI: https://doi.org/10.1007/s11164-020-04285-7