Journal
ANTI-CANCER AGENTS IN MEDICINAL CHEMISTRY
Volume 17, Issue 12, Pages 1644-1651Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/1871521409666170412130040
Keywords
Pyrimidine derivatives; one-pot synthesis; antiproliferative activity; caspase 9; hemolysis; tyrosine kinase
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Background: One of the promising scaffolds in drug discovery is the fused pyrimidine derivatives. Objective and Method: Efficient synthesis of a novel series of 18 new 1,8-naphthyridine-3-carbonitrile, 2-amino pyrido[2,3-d] pyrimidine derivatives via multi-component reactions of aromatic aldehydes, active methylene, and an aromatic amine under microwave irradiation and evaluation of their anticancer activity and possible mechanisms. Results: Only compounds 5 (a-c)had a significant antiproliferative activity in hepatic HepG2 cells at submicromolar concentration (7.5-10 mu M). Similarly, only compound 11 (a-c) had a significant activity in breast MCF7 cells at (4-7 mu M). Derivatives with one methoxyphenyl substitution (5a and 11a) were not different from derivatives having dimethoxyphenyl substitution (5b and 11b). However, thiophene substitution (5c and 11c) enhanced the anticancer activity in both cells lines examined by 25% in HepG2 and by similar to 45% in MCF7 cells compared to a and b derivatives. All compounds were safe to both normal human lung cells (WI-38) and RBCs at concentrations up to 40 mM. The antiproliferative activity of compounds 5 (a-c) in HepG2 could be attributed to an induction of intrinsic apoptotic pathway as evidenced from the induction of initiator caspase 9 by similar to 4 folds. While, the activity of compounds 11 (a-c) could be attributed to their potential to inhibit tyrosine kinases (TK) by up to 85%. The IC50 of derivative 11c against TK was at 173 nM. Conclusion: The present study reported that derivatives 5 and 11 have merit for further investigation as anticancer and TK inhibitors.
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