title: Ellagic acid derivatives and cytotoxic cucurbitacins from Elaeocarpus mastersii.
abstract: Bioassay-guided investigation of the bark of Elaeocarpus mastersii using KB (human oral epidermoid carcinoma) cells as a monitor led to the isolation of two cucurbitacins, cucurbitacin D and cucurbitacin F as cytotoxic principles, together with two ellagic acid derivatives, 4'-O-methylellagic acid 3-(2",3"-di-O-acetyl)-alpha-L-rhamnoside (1) and 4,4'-O-dimethylellagic acid 3-(2",3"-di-O-acetyl)-alpha-L-rhamnoside (2). These compounds were evaluated against a panel of human tumor cell lines.
authors.affiliation: Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.
authors.forename: Aiko
authors.initials: A
authors.lastname: Ito
authors.forename: Hee-Byung
authors.initials: HB
authors.lastname: Chai
authors.forename: Dongho
authors.initials: D
authors.lastname: Lee
authors.forename: Leonardus B S
authors.initials: LB
authors.lastname: Kardono
authors.forename: Soedarsono
authors.initials: S
authors.lastname: Riswan
authors.forename: Norman R
authors.initials: NR
authors.lastname: Farnsworth
authors.forename: Geoffrey A
authors.initials: GA
authors.lastname: Cordell
authors.forename: John M
authors.initials: JM
authors.lastname: Pezzuto
authors.forename: A Douglas
authors.initials: AD
authors.lastname: Kinghorn
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D054728:Cucurbitacins; D004610:Ellagic Acid / Q000031:analogs & derivatives* / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D014315:Triterpenes; D004610:Ellagic Acid; C453923:cucurbitacin F; C038105:cucurbitacin D; D054728:Cucurbitacins