Synthesis of isoindolo[1,4]benzoxazinone and isoindolo[1,5]benzoxazepine: two new ring systems of pharmaceutical interest

Two new ring systems, isoindolo[1,4]benzoxazinone and isoindolo[1,5]benzoxazepine, were conveniently synthesized through cyclization of suitably substituted isoindole derivatives. Some of the new compounds exhibited antiproliferative activity against a wide range of human tumor cell lines with GI50 mean values at low micromolar level (3.72-5.13 μM).

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