title: Two labdane diterpenoids and a seco-tetranortriterpenoid from Turreanthus africanus.
abstract: Examination of the methylene chloride soluble portion of the acetone extract of the seeds of Turreanthus africanus yielded two labdane diterpenoids 12,15-epoxylabda-8(17),12,14-trien-16-al (1) and 16-acetoxy-12(R),15-epoxy-15beta-hydroxylabda-8(17),13(16)-diene (2) and a limonoid, 17-epi 12-dehydroxyheudebolin (3). Structures elucidation was based on the analysis of spectroscopic data.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon. ptane@yahoo.com
authors.forename: Pierre
authors.initials: P
authors.lastname: Tane
authors.forename: Mac Thomas
authors.initials: MT
authors.lastname: Akam
authors.forename: Apollinaire
authors.initials: A
authors.lastname: Tsopmo
authors.forename: Chi P
authors.initials: CP
authors.lastname: Ndi
authors.forename: Olov
authors.initials: O
authors.lastname: Sterner
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared
chemical_list: C495478:12,15-epoxylabda-8(17),12,14-trien-16-al; C495477:16-acetoxy-12(R),15-epoxy-15beta-hydroxylabda-8(17),13(16)-diene; C495476:17-epi 12-dehydroxyheudebolin; D004224:Diterpenes; D036701:Limonins