title: Cytotoxic and antimalarial alkaloids from Brunsvigia littoralis.
abstract: Four known alkaloids, lycorine (1), 1,2-di-O-acetyllycorine (2), ambelline (3), and crinine (4) were isolated from the bulbs of Brunsvigia littoralis (Amaryllidaceae). 1H- and 13C-NMR spectra of 2 were completely assigned by means of 1D- and 2D-NMR techniques. The alkaloids (1-4) together with the synthesised 11-O-acetylambelline (3a) and 3-O-acetylcrinine (4a) were tested for antimalarial activity with two strains of cultured Plasmodium falciparum and for cytotoxicity with BL6 mouse melanoma cells. Structures 1 and 2 exhibited both antimalarial and cytotoxic activity.
authors.forename: W E
authors.initials: WE
authors.lastname: Campbell
authors.forename: J J
authors.initials: JJ
authors.lastname: Nair
authors.forename: D W
authors.initials: DW
authors.lastname: Gammon
authors.forename: J
authors.initials: J
authors.lastname: Bastida
authors.forename: C
authors.initials: C
authors.lastname: Codina
authors.forename: F
authors.initials: F
authors.lastname: Viladomat
authors.forename: P J
authors.initials: PJ
authors.lastname: Smith
authors.forename: C F
authors.initials: CF
authors.lastname: Albrecht
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D000818:Animals; D000962:Antimalarials / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008546:Melanoma, Experimental / Q000473:pathology; D051379:Mice; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D014407:Tumor Cells, Cultured
chemical_list: D000470:Alkaloids; D000962:Antimalarials; D000972:Antineoplastic Agents, Phytogenic