New lignans from the heartwood of Cunninghamia lanceolata |
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Authors: | Lee Tzong-Huei Yeh Ming-Hsi Chang Chi-I Lee Ching-Kuo Shao Yi-Yuan Kuo Yueh-Hsiung |
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Institution: | Graduate Institute of Pharmacognosy Science, Taipei Medical University, Taipei, Taiwan, Republic of China. |
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Abstract: | Two new lignans, including the aryltetralin-type lignan, lanceoline (1), and the diaryl butyrolactone-type lignan, 5-methoxytrachelogenin (2), together with 5-methoxywikstromol (3), were isolated from the low-polar layer of a heartwood extract of Cunninghamia lanceolata as their acetylated derivatives 1a, 2a and 3a, respectively, and were identified by spectroscopic analyses. The (13)C-NMR data for 3a are reported for the first time in this paper. |
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