Two new flavans from the roots of Dianella ensifolia (L.) DC

AbstractTwo new flavans, named (2S)-2′,4′-dihydroxy-7-methoxy-8-methylflavan (1) and (2S)-2′-hydroxy-4′,7-dimethoxy-8-methylflavan (2) were isolated from the roots of Dianella ensifolia. Their structures were elucidated by extensive spectroscopic measurements and comparison with data reported in literatures. Compounds 1 and 2 displayed cytotoxic effects against cancer cell lines MDA-MB-231, B16-F10, HCT116 and A549.