Lignans from the bark extract of Pinus sylvestris L |
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| Authors: | Sinkkonen Jari Karonen Maarit Liimatainen Jaana Pihlaja Kalevi |
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| Affiliation: | Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, Vatselankatu 2, FI-20014 Turku, Finland. jari.sinkkonen@utu.fi |
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| Abstract: | Three lignans were isolated from a bioactive fraction of the 70% aqueous acetone extract of the pine (Pinus sylvestris L.) bark. Their structures were identified by high-resolution positive ion EI mass spectrometry and NMR spectroscopy. The complete assignment of proton and carbon signals was achieved by 2D NMR experiments: HSQC, HMBC, DQF-COSY and NOESY. |
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