title: New pyrazole alkaloids from the root bark of Newbouldia laevis.
abstract: The root bark of Newbouldia laevis afforded withasomnine, 4'-hydroxywithasomnine, 4'-methoxywithasomnine, newbouldine, 4'-hydroxynewbouldine, and 4'-methoxynewbouldine. 4'-Methoxywithasomnine and 4'-methoxynewbouldine are new natural products.
authors.forename: A J
authors.initials: AJ
authors.lastname: Aladesanmi
authors.forename: R
authors.initials: R
authors.lastname: Nia
authors.forename: A
authors.initials: A
authors.lastname: Nahrstedt
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D000470:Alkaloids