title: Antimicrobial activities of a new schizozygane indoline alkaloid from Schizozygia coffaeoides and the revised structure of isoschizogaline.
abstract: Extracts from Schizozygia coffaeoides showed antimicrobial activity against fungal and bacterial species. Alkaloids isolated using bioassay-guided fractionation were isoschizogaline, schizogynine, and a new indoline alkaloid, 7,8-dehydro-19beta-hydroxyschizozygine, shown to be the most active antifungal compound. The structure of isoschizagaline, the only active antibacterial, is revised on the basis of NMR analysis.
authors.affiliation: Department of Botany and Department of Chemistry, University of Nairobi. P.O. Box 30197, Nairobi, Kenya.
authors.forename: R M
authors.initials: RM
authors.lastname: Kariba
authors.forename: P J
authors.initials: PJ
authors.lastname: Houghton
authors.forename: Abiy
authors.initials: A
authors.lastname: Yenesew
mesh_terms: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029062:Apocynaceae / Q000737:chemistry*; D001412:Bacillus subtilis / Q000187:drug effects; D002963:Cladosporium / Q000187:drug effects; D004821:Epidermophyton / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D026121:Indole Alkaloids / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D007630:Kenya; D013058:Mass Spectrometry; D008864:Microsporum / Q000187:drug effects; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects; D014249:Trichophyton / Q000187:drug effects
chemical_list: C457207:7,8-dehydro-19beta-hydroxyschizozygine; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D026121:Indole Alkaloids; C457208:isoschizogaline; C457209:schizogynine