title: EI/MS fragmentation of abieta-8,11,13-triene diterpenoid derivatives as a tool to identify swartziarboreols in Swartzia extracts.
abstract: A systematic molecular fragmentation pathway (SMFP) was designed as an identifier to detect swartziarboreols (abieta-8,11,13-triene diterpenoid derivatives) in Swartzia extracts. The SMFP was rationalised through the interpretation of the EI/MS of swartziarboreols isolated from S. arborescens and S. langasdorffii and by analogy with the fragmentations observed for previously isolated compounds. Two pairs of swartziarboreol epimers were identified by GC-MS in an extract of S. langsdorffii using SMFP. Acetylation and methylation of the dichloromethane extract furnished, respectively, 3 and 4, which suggested the occurrence of a new natural orthodiphenolic swartziarboreol.
authors.affiliation: Laboratory of Natural Products, State University of Campinas, Campinas, SP, Brazil.
authors.forename: Celira Caparica
authors.initials: CC
authors.lastname: Santos
authors.forename: Eva Gonçalves
authors.initials: EG
authors.lastname: Magalhães
authors.forename: Aderbal Farias
authors.initials: AF
authors.lastname: Magalhães
mesh_terms: D045784:Abietanes / Q000737:chemistry*; D007887:Fabaceae / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D045784:Abietanes; D010936:Plant Extracts