title: Maytansine, a novel antileukemic ansa macrolide from Maytenus ovatus.
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D007942:Leukemia, Experimental / Q000188:drug therapy*; D010936:Plant Extracts / Q000627:therapeutic use; D010944:Plants / Q000032:analysis*
chemical_list: D000903:Antibiotics, Antineoplastic; D010936:Plant Extracts