A New Triterpene Lactone, Maytenfolone, and a New Sesquiterpene Pyridine Alkaloid, Emarginatine H, from the Leaves of Maytenus diversifolia

A New Triterpene Lactone, Maytenfolone, and a New Sesquiterpene Pyridine Alkaloid, Emarginatine H, from the Leaves of Maytenus diversifolia Sesquiterpene pyridine alkaloids from Maytenus emarginata: Emarginatine-C and -D and cytotoxic emarginatine-E and emarginatinine Structure and Stereochemistry of Emargiatine-A, a Novel Cytotoxic Sesquiterpene Pyridine Alkaloid from Maytenus emarginata: X-Ray Crystal Steructure of Emarginatine-A Monohydrate Antitumor Agents, 112. Emarginatine B, a Novel Potent Cytotoxic Sesquiterpene Pyridine Alkaloid from Maytenus emarginata Antitumor Agents, 112. Emarginatine B, a Novel Potent Cytotoxic Sesquiterpene Pyridine Alkaloid from Maytenus emarginata Two New Macrolide Sesquiterpene Pyridine Alkaloids from Maytenus emarginata: Emarginatine G and the Cytotoxic Emarginatine F Two New Macrolide Sesquiterpene Pyridine Alkaloids from Maytenus emarginata: Emarginatine G and the Cytotoxic Emarginatine F Further sesquiterpene pyridine alkaloids from Maytenus aquifolium Antitumor Agents, 116. Cytotoxic Triterpenes from Maytenus diversifolia Sesquiterpene Pyridine Alkaloids from Maytenus ebenifolia