Cytotoxic ent-kauranoids from the medicinal plant Isodon xerophilus.


Bioassay-directed fractionation of the leaves of the medicinal plant Isodon xerophilus led to the isolation of a series of potential antitumor molecules. Thirteen new (1-13) and 23 (14-36) known diterpenoids were isolated and identified, representing ent-kauranoids of several structural types. The structures of 1-13 were determined by means of spectroscopic… (More)


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