Cytotoxic diterpenoid quinonemethides from the roots of Pygmacopremna herbacea

Cytotoxic diterpenoid quinonemethides from the roots of Pygmacopremna herbacea Agastaquinone, a New Cytotoxic Diterpenoid Quinone from Agastache rugosa Cytotoxic Diterpenoid Alkaloids from Aconitum austroyunnanense Cytotoxic Chemical Constituents from the Roots of <i>Cimicifuga fetida</i> Cytotoxic diterpenes from roots of Crossopetalum gaumeri, a Celastraceae species from Yucatan Peninsula New diterpenoids from Caesalpinia species and their cytotoxic activity Two pregnane derivatives and a quinolone alkaloid from Helicteres angustifolia Cytotoxic Prenylated Acetophenone Dimers from <i>Acronychia pedunculata</i> C19-diterpenoid alkaloids from Aconitum hemsleyanum var. circinatum Abietane Diterpenoids from <i>Clerodendrum bungei</i>