title: Limonoids of Teclea ouabanguiensis.
abstract: The stem bark of Teclea ouabanguiensis has yielded six triterpenoids, two of which are new. The known compounds were identified spectroscopically as 7-deacetylazadirone (2), 7-deacetylproceranone (3), tecleanin, (4), and lupeol. The novel compounds include the tetranortriterpenoids, 7-deacetoxy-7-oxoazadirone (1), and ouabanginone (5). The biogenetic significance of the presence of these limonoids in T. ouabanguienis is discussed.
mesh_terms: D002163:Cameroon; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000032:analysis; D010946:Plants, Medicinal / Q000032:analysis*; D014315:Triterpenes / Q000032:analysis*
chemical_list: D010936:Plant Extracts; D014315:Triterpenes