title: Chemical constituents of Nauclea latifolia and their anti-GST and anti-fungal activities.
abstract: The crude ethanolic extract of Nauclea latifolia yielded five known compounds, strictosamide (1), naucleamides A (2), naucleamide F (3), quinovic acid-3-O-beta-rhamnosylpyranoside (4), and quinovic acid 3-O-beta-fucosylpyranoside (5). Microbial reactions, using a whole cell culture of Rhizopus circinans on compound (1), yielded three analogues, 10-hydroxystrictosamide (6), 10-beta-glucosyloxyvincoside lactam (7) and 16,17-dihydro-10-beta-glucosyloxyvincoside lactam (8). Compounds 1-8 were identified with the aid of extensive NMR spectral studies. Compound 8 was found to be a new metabolite. Compounds 1-8 exhibited different levels of anti-GST and anti-fungal activities.
authors.affiliation: Department of Chemistry, The University of Winnipeg, 515 Portage Ave. Winnipeg, MB, Canada R3B 2E9. a.ata@uwinnipeg.ca
authors.forename: Athar
authors.initials: A
authors.lastname: Ata
authors.forename: Chibuike C
authors.initials: CC
authors.lastname: Udenigwe
authors.forename: Wadim
authors.initials: W
authors.lastname: Matochko
authors.forename: Paul
authors.initials: P
authors.lastname: Holloway
authors.forename: Michael O
authors.initials: MO
authors.lastname: Eze
authors.forename: Peter N
authors.initials: PN
authors.lastname: Uzoegwu
mesh_terms: D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002243:Carbolines / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004791:Enzyme Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005982:Glutathione Transferase / Q000037:antagonists & inhibitors* / Q000378:metabolism; D008826:Microbial Sensitivity Tests; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry; D012233:Rhizopus / Q000187:drug effects* / Q000254:growth & development; D019666:Rubiaceae / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000935:Antifungal Agents; D002243:Carbolines; D004791:Enzyme Inhibitors; D010936:Plant Extracts; D005982:Glutathione Transferase