Synthesis and in vitro antiproliferative activities of lupanol derivatives towards human esophageal squamous carcinoma cells

Abstract A series of lupanol derivatives were synthesized and evaluated in vitro for their inhibitory activities against three human esophageal squamous carcinoma cells lines, Eca-109, TE-1 and EC-9706. Among lupanol derivatives, seven were new compounds, and lupanol cinnamate analogues 5 and 6, hydrazone analogues 9 and 10 presented high activities towards all the tested tumour cells, even higher activities than those of doxorubicine. Graphical Abstract

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