Abstract
A series of thiazolo[4,5-b]pyridin-2(3H)-one derivatives were obtained via [3 + 3]-cyclization of 4-amino-5H-thiazol-2-one and α,β-unsaturated ketones or α-ketoacids. The structures of newly synthesized compounds were established by spectral data and a single-crystal X-ray diffraction analysis. Target compounds were screened for their anticancer activity according to US NCI protocols and moderate inhibitory activity against the tested cell line was confirmed. 5-Phenyl-7-(pyridin-3-yl)-3H-thiazolo[4,5-b]pyridin-2-one (3) and 2-oxo-7-thiophen-2-yl-2,3-dihydrothiazolo[4,5-b]pyridine-5-carboxylic acid (12) were screened for their cytotoxicity effects on HepG2 and Balb/c 3T3 cells which revealed promising results using MTT, NRU and TPC assays.
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Acknowledgements
The authors are grateful to Dr. V. L. Narayanan from Drug Synthesis and Chemistry Branch, National Cancer Institute, Bethesda, MD, USA, for in vitro evaluation of anticancer activity.
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Lozynskyi, A., Zimenkovsky, B., Radko, L. et al. Synthesis and cytotoxicity of new thiazolo[4,5-b]pyridine-2(3H)-one derivatives based on α,β-unsaturated ketones and α-ketoacids. Chem. Pap. 72, 669–681 (2018). https://doi.org/10.1007/s11696-017-0318-1
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DOI: https://doi.org/10.1007/s11696-017-0318-1