Abstract
A novel series of 2-aminopyranopyridine derivatives (3–19) were synthesized utilizing 2-chloro-4-(thiophen-2-yl)-7,8-dihydro-5H-pyrano[4,3-b]pyridine-3-carbonitrile (2) as a key starting compound. The structures of the newly synthesized compounds were confirmed on the basis of elemental analyses and infrared (IR), 1H, 13C-nuclear magnetic resonance (NMR) and mass spectra. Anticancer evaluation was carried out for the new derivatives against Hep-G2 (human liver carcinoma), MCF-7 (human breast carcinoma), Caco-2 (human colorectal adenocarcinoma) and HCT116 (human colorectal carcinoma) cell lines using doxorubicin as a reference drug. The biological results revealed that the compounds 12 and 14 exhibited more potent anticancer activity than the reference drug.
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