Syntheses and antiproliferative evaluation of oxyphenisatin derivatives.

Syntheses and structure-antiproliferative relationship for oxyphenisatin analogues are described. The cell proliferation data showed that the presence of substituents (especially F, Cl, Me, CF(3), and OMe) in the 6- and 7-position of oxyphenisatin markedly enhanced the potency in the MDA-468 cell line without affecting the MDA-231 cell line. The best compounds from this series showed low nanomolar antiproliferative activity towards the MDA-468 cell line and a 1000-fold selectivity over the MDA-231 cell line.