title: A new furanoditerpenoid marker for the distinction between the seeds of two species of Caesalpinia.
abstract: A new cassane furanoditerpene, 17-methylvouacapane-8(14),-9(11)-diene (1), has been isolated from the seed kernels of Caesalpinia crista and its structure determined by mass, IR and NMR spectrometry. The 1H- and 13C-NMR spectra were assigned using a combination of 1H-1H COSY, HSQC and HMBC two-dimensional NMR experiments. An HPTLC method has been developed to quantify 1 in seed material. The furanoditerpene can serve as a marker chemically to differentiate C. crista from the synonymous C. bonduc.
mesh_terms: D015415:Biomarkers / Q000032:analysis; D029911:Caesalpinia / Q000737:chemistry*; D004224:Diterpenes / Q000032:analysis*; D005663:Furans / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods; D010936:Plant Extracts / Q000737:chemistry; D012639:Seeds / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods; D013057:Spectrum Analysis
chemical_list: C479508:17-methylvouacapane-8(14),-9(11)-diene; D015415:Biomarkers; D004224:Diterpenes; D005663:Furans; D010936:Plant Extracts