✦ LIBER ✦
Four New Lignans with a Bicyclo[3.3.1]nonadienemethanol Skeleton from Cunninghamia lanceolata
✍ Scribed by Ching-Kuo Lee; Ming-Hsi Yeh; Tzong-Huei Lee; His-Lin Chiu; Yueh-Hsiung Kuo
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- German
- Weight
- 175 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Four unique bicyclo[3.3.1]nonadienemethanol lignans, designated lanceolatanins A (1), B (2), C (3), and D (4), along with one previously known compound, isolariciresinol (5), were isolated from the MeOH extracts of the heartwood of Cunninghamia lanceolata. Their structures were elucidated by application of various spectroscopic methods, including 1D‐ and 2D‐NMR techniques, to their acetylated derivatives 1a, 2a, 3a, and 4a. Their possible biosynthetic formations are also discussed.