7-O-Methylhorminone and Other Cytotoxic Diterpene Quinones from Lepechinia bullata

7-O-Methylhorminone and Other Cytotoxic Diterpene Quinones from Lepechinia bullata Bullatacin and Bullatacinone: Two Highly Potent Bioactive Acetogenins from Annona bullata Bullatacin, Bullatacinone, and Squamone, a New Bioactive Acetogenin, from the Bark of Annona squamosa 30-, 31-, and 32-Hydroxybullatacinones: Bioactive Terminally Hydroxylated Annonaceous Acetogenins from Annona bullata Agastaquinone, a New Cytotoxic Diterpenoid Quinone from Agastache rugosa Novel cytotoxic annonaceous acetogenins: (2,4-cis and trans)-bulladecinones from annona bullata (annonaceae) Cytotoxic diterpenoid quinonemethides from the roots of Pygmacopremna herbacea Cytotoxic dimeric quinolone–terpene alkaloids from the root bark of Zanthoxylum rhetsa Three novel quinolinone alkaloids from the leaves of Melicope denhamii A new quinolone alkaloid from the fruits of Tetradium ruticarpum