Two new 19-oxygenated ent-kaurane diterpenoids,pharicinins D and E(1 and 2),together with an artifact,pharicinin D acetal (3) were isolated from the leaves of Isodon pharicus.Their structures were determined by 1D and 2D NMR spectroscopic analysis. All of them were evaluated for their cytotoxicity.
Zhao, YongPu, Jian XinHuang, Sheng XiongYang, Li BinXiao, Wei LieLi, Li MeiDing, Li ShengSun, Han Dong
