Synthesis and antitumor activity evaluation of different 2,5-dialkyloxazolopyrano[3,2-c]quinolinone derivatives

Abstract

A new interesting family of 2,5-dialkyloxazolopyrano[3,2-c]quinolinone derivatives 4a-l were synthesized in good yields using a convenient and successful method. Structures of all compounds were achieved by elemental analyses, IR, 1H NMR, 13C NMR, and mass techniques. The tetracyclic homologues 4a-l were evaluated for antitumor activity and cytotoxicity against a board of three human cancer cell lines (HepG-2, MCF-7, and HCT-116). The cells were treated with these compounds at differentiable dosages, and cell viability was determined. Significant anticancer activities were observed in vitro for some members of the series related to 5-fluorouracil and compounds 4c and 4f showed potent cytotoxic effect, that creates these compounds were disclosed as the most applicable anticancer agents against different cancer cell lines.