title: Cytotoxic saponins from Schefflera fagueti.
abstract: Six new lupane (1 - 4) and oleanane saponins (5 and 6) were isolated from the aerial parts of Schefflera fagueti Baill. (Araliaceae). Their structures were determined by 2D-NMR spectroscopy (DQF-COSY, 1D-TOCSY, 2D-HOHAHA, 1D-ROESY, HSQC, HMBC). The antiproliferative activity of compounds 1 - 6 and of their prosapogenins (1a - 6a) was evaluated using three continuous murine and human culture cell lines J774, HEK-293, WEHI-164. Oleanane saponins 5 and 6 were the most active, showing significant inhibitory effects on all cell lines, while their prosapogenins 5a and 6a demonstrated minor activity.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Salerno, Fisciano, Salerno, Italy.
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Cioffi
authors.forename: Alessandra
authors.initials: A
authors.lastname: Braca
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Autore
authors.forename: Ivano
authors.initials: I
authors.lastname: Morelli
authors.forename: Aldo
authors.initials: A
authors.lastname: Pinto
authors.forename: Fabio
authors.initials: F
authors.lastname: Venturella
authors.forename: Nunziatina
authors.initials: N
authors.lastname: De Tommasi
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D027481:Araliaceae; D002455:Cell Division / Q000187:drug effects*; D002460:Cell Line / Q000187:drug effects; D045744:Cell Line, Tumor / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D008517:Phytotherapy; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D012503:Saponins / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D012503:Saponins