title: [Studies on the antitumor constituents of Maytenus confertiflora Luo et Chen (Celastraceae). II. Isolation and characterization of maytansine and maytanprine from the stems].
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification*; D002681:China; D008453:Maytansine / Q000031:analogs & derivatives / Q000302:isolation & purification*; D010078:Oxazines / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000032:analysis*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010078:Oxazines; D008453:Maytansine; C033351:maytanprine