Chemoselective synthesis and cytotoxic activity of a series of novel benzo[1,4]oxazin-3-one derivatives
2017
Abstract That tetraacetonitrile copper perchlorate catalyzes intramolecular amidation of arenes was found to be a new strategy for construction of nitrogen-containing heterocycles and resulted in the formation of a series of novel benzo[1,4]oxazin-3-one derivatives from N -(1,3-diphenyl-1 H -1,2,4-triazol-5-yl)-2-phenoxyacetamides. This approach of heterocyclic construction proceeds in a chemoselective manner in which only benzo[1,4]oxazin-3-one derivatives were obtained by C N bonds formation with cheap and simple copper salt catalyst under mild conditions in moderate to good yields. The biological assay of some of benzo[1,4]oxazin-3-one derivatives showed that they had moderate antiproliferative activity toward MDA-MB231 and HeLa cancer cell lines.
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