title: Antitumor agents. 168. Dysoxylum cumingianum. IV. The structures of cumingianosides G-O, new triterpene glucosides with a 14,18-cycloapotirucallane-type skeleton from Dysoxylum cumingianum, and their cytotoxicity against human cancer cell lines.
abstract: Nine new triterpene glucosides, named cumingianosides G-O (4-7, 9, 12-15), containing a 14,18-cycloapotirucallane-type skeleton were isolated from a cytotoxic fraction of the leaves of Dysoxylum cumingianum. The structures of the new compounds were established on the basis of chemical and spectral examinations. Evaluation of the cytotoxic activity of cumingianosides G-O showed that cumingianoside M exhibited significant (< 4 microM) cytotoxicity, especially against leukemia and melanoma cell lines.
authors.affiliation: Faculty of Pharmaceutical Sciences, Fukuoka University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Fujioka
authors.forename: A
authors.initials: A
authors.lastname: Sakurai
authors.forename: K
authors.initials: K
authors.lastname: Mihashi
authors.forename: Y
authors.initials: Y
authors.lastname: Kashiwada
authors.forename: I S
authors.initials: IS
authors.lastname: Chen
authors.forename: K H
authors.initials: KH
authors.lastname: Lee
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D006801:Humans; D007938:Leukemia / Q000473:pathology; D009682:Magnetic Resonance Spectroscopy; D008545:Melanoma / Q000473:pathology; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D006027:Glycosides; D014315:Triterpenes; C104686:cumingianoside M