title: Benzoquinone derivatives of Myrsine africana and Maesa lanceolata.
abstract: The fruits of Myrsine africana afforded two new benzoquinone derivatives, methylvilangin and methylanhydrovilangin. On the other hand, from the fruits of Maesa lanceolata two more novel compounds; 2,5-dihydroxy-3-(nonadec-14-enyl)-benzoquinone and lanciaquinone were isolated. Their structural elucidation was achieved by spectroscopic measurements including 2D NMR experiments.
authors.affiliation: Chemistry Department, University of Nairobi, PO Box 30197, Nairobi, Kenya.
authors.forename: Lawrence O
authors.initials: LO
authors.lastname: Arot Manguro
authors.forename: Jacob O
authors.initials: JO
authors.lastname: Midiwo
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kraus
authors.forename: Ivar
authors.initials: I
authors.lastname: Ugi
mesh_terms: D000107:Acetylation; D016227:Benzoquinones / Q000737:chemistry* / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D008745:Methylation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D029623:Primulaceae / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D016227:Benzoquinones