title: New lignans from the heartwood of Cunninghamia lanceolata.
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.
authors: Graduate Institute of Pharmacognosy Science, Taipei Medical University, Taipei, Taiwan, Republic of China.
authors: Tzong-Huei
authors: TH
authors: Lee
authors: Ming-Hsi
authors: MH
authors: Yeh
authors: Chi-I
authors: CI
authors: Chang
authors: Ching-Kuo
authors: CK
authors: Lee
authors: Yi-Yuan
authors: YY
authors: Shao
authors: Yueh-Hsiung
authors: YH
authors: Kuo
mesh_terms: D000107:Acetylation; D002247:Carbon Isotopes; D032486:Cunninghamia / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts; D010946:Plants, Medicinal / Q000737:chemistry; D013057:Spectrum Analysis
chemical_list: D002247:Carbon Isotopes; D017705:Lignans; D010936:Plant Extracts