Oligolignans in Norway spruce and Scots pine knots and Norway spruce stemwood

Stefan Willför, Markku Reunanen, Patrik Christoffer Eklund, Rainer Sjöholm, Leif Kronberg, Pedro Fardim, Suvi Pietarinen, Bjarne Holmbom

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    41 Sitaatiot (Scopus)

    Abstrakti

    Oligolignans present in substantial amounts in Norway spruce and Scots pine knots were characterised. The hydrophilic knotwood substances were extracted and different chromatographic methods were applied to obtain fractions for analysis by GC, GC-MS, HR-EI-MS, LC-ESI-MS, NMR, and FTIR. beta-O-4-Linked guaiacylglyceryl ethers of hydroxymatairesinol (la, lb, Ic), secoisolariciresinol (II), lariciresinol (III), isolariciresinol (IV), lignan A (V), liovil (VI), conidendrin (VII), and pinoresinol (VIII) were identified in the spruce knotwood extract and beta-O-4-linked guaiacylglyceryl ethers of nortrachelogenin (IX) and secoisolariciresinol (II) in the pine knotwood extract. The structures of allo-hydroxymatairesinol-4'-guaiacylglyceryl ether (Ia), hydroxymatairesinol-4-guaiacylglyceryl ether (lb), hydroxymatairesinol-4'-guaiacylglyceryl ether (Ic), secoisolariciresisinol-4-guaiacylglyceryl ether (II), and lariciresinol-4'-guaiacylglyceryl ether (III) were determined via GC-MS, HR-MS, and H-1 and C-13 NMR analyses. The structures of (Ia), (Ic), (IV), (V), (VI), (VII), and (IX) have not been reported earlier. Spruce stemwood, both heartwood and sapwood, also contained oligolignans in small amounts. In addition, some dilignans with four phenylpropanoid units were tentatively identified in the hydrophilic knotwood substances.
    AlkuperäiskieliEi tiedossa
    Sivut345–354
    Sivumäärä10
    JulkaisuHolzforschung
    Vuosikerta58
    Numero4
    TilaJulkaistu - 2004
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • ASE
    • C-13 NMR
    • dilignans
    • FTIR
    • guaiacylglycerol
    • guaiacylglyceryl ether
    • H-1 NMR
    • heartwood
    • knots
    • oligolignans
    • Picea abies
    • Pinus sylvestris
    • sesquilignans

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