title: Isolation and structure of five new cancer cell growth inhibitory bufadienolides from the Chinese traditional drug Ch'an Su.
abstract: Five new bufadienolides, 3beta-formyloxyresibufogenin (1), 19-oxobufalin (2), 19-oxodesacetylcinobufagin (3), 6alpha-hydroxycinobufagin (4), and 1beta-hydroxybufalin (5), have been isolated together with the previously known bufadienolides 6-20 from the Chinese traditional drug "Ch'an Su". The structures were elucidated employing spectroscopic methods. Bufadienolides 1-5 provided significant inhibitory activity against the KB and HL-60 cancer cell lines. In addition, bufadienolide 1 was found active against the MH-60 cancer cell line.
authors.affiliation: Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nogawa
authors.forename: Y
authors.initials: Y
authors.lastname: Kamano
authors.forename: A
authors.initials: A
authors.lastname: Yamashita
authors.forename: G R
authors.initials: GR
authors.lastname: Pettit
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002018:Bufanolides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002025:Bufonidae; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D018922:HL-60 Cells / Q000187:drug effects; D006801:Humans; D007624:KB Cells / Q000187:drug effects; D007951:Leukemia, Myeloid; D009682:Magnetic Resonance Spectroscopy; D008516:Medicine, Chinese Traditional; D051379:Mice; D008968:Molecular Conformation; D015394:Molecular Structure; D009303:Nasopharyngeal Neoplasms; D012867:Skin / Q000378:metabolism; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; D002018:Bufanolides