title: Plant anticancer agents. XXIII. 6 alpha-senecioyloxychaparrin, a new antileukemic quassinoid from Simaba multiflora.
abstract: Fractionation of an aqueous ethanol extract of the wood of Simaba multiflora afforded a new antineoplastic quassinoid, 6 alpha-senecioyloxychaparrin (5), and two known quassinoids 6 alpha-senecioyloxychaparrinone (1) and chaparrinone (2). The structure of 5, which displayed activity against the KB and P-388 test systems, was established through the interpretation of spectral data.
mesh_terms: D000107:Acetylation; D000470:Alkaloids / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000627:therapeutic use; D055598:Chemical Phenomena; D002621:Chemistry; D007941:Leukemia P388 / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D009374:Neoplasms, Experimental / Q000188:drug therapy; D036702:Quassins
chemical_list: D000470:Alkaloids; D000972:Antineoplastic Agents, Phytogenic; D036702:Quassins; C038607:6 alpha-senecioyloxychaparrin