title: Normaytansine, a new antileukemic ansa macrolide from Maytenus buchananii.
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification*; D002294:Carcinoma, Squamous Cell; D002478:Cells, Cultured; D055598:Chemical Phenomena; D002621:Chemistry; D006801:Humans; D007941:Leukemia P388 / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D009374:Neoplasms, Experimental
chemical_list: D000972:Antineoplastic Agents, Phytogenic