Sesquiterpenoid with new skeleton from Chloranthus henryi

Dayejijiol (1), a novel sesquiterpene with a new carbon skeleton, and a novel labdane-type diterpenoid (13S)-13-hydroxy-19-methoxy-5αH-8(17), 14-labdadien (3), together with three known compounds chloranthalactone A (4), shizukanolide (5), shizukolidol (6) were isolated from Chloranthus henryi Hemsl. Their structures were established by a combination of 1D and 2D NMR spectroscopic techniques. Compounds 1 and 5 exhibited anti-tumor activities against Hela and K562 human tumor cell lines.