title: [Studies on new cytotoxic annonaceous acetogenins from Uvaria grandiflora and absolute configurations].
abstract: Two new cytotoxic annonaceous acetogenins, named uvarigrin(1) and uvarigrandin A(3), were obtained from the roots of Uvaria grandiflora Roxb(Annonaceae). Based on X-ray analysis and Mosher's methodology, the overall absolute configuration of 1 was established as 15S, 17R, 18R, 21R, 22R, 36S. The absolute configuration of 3 was also resolved by Mosher's methodology. The relative configuration of the previously reported uvarigranin (2) was revised. Compound 1 showed cytotoxicity against HCT-8, Bel7402 and A2780 human tumor cell lines at ED50 levels of 0.15, 0.21 and 0.41 microgram.ml-1, respectively.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050.
authors.forename: X P
authors.initials: XP
authors.lastname: Pan
authors.forename: D Q
authors.initials: DQ
authors.lastname: Yu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification*; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry* / Q000145:classification
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D005663:Furans; D007783:Lactones; C437401:uvarigrandin A; C118093:uvarigranin; C118092:uvarigrin