Liriodendronine,an oxoaporphine pigment from discolored sapwood of Liriodendron tulipifera |
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Authors: | Peter D. Senter Chen-Loung Chen |
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Affiliation: | Department of Wood and Paper Science, North Carolina State University, Raleigh, NC 27607, U.S.A. |
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Abstract: | A new violet oxoaporphine alkaloid. liriodendronine, has been isolated from the discolored sapwood of Liniodendron tulipifera and its structure determined by spectroscopic methods and by conversion into a corunnine-type compound, 2-O,N-dimethylliriodendronine. UV studies demonstrated that the compound exists primarily as a quinone-methide in a neutral medium, a dianion in base, an isoquinolinium ion in weak acid, and as an antiaromatic conjugate acid in conc H2SO4. |
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Keywords: | Magnoliaceae discolored sapwood oxoaporphine liriodendronine |
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