3 rezultatus
Six new triterpenes (neoabieslactones A-F, 1-6) and 17 known compounds were isolated from the aerial parts of Abies chensiensis. The structures of the new triterpenes were proposed by 1D and 2D NMR spectroscopy. Compound 1 was confirmed structurally by X-ray crystallography. In a bioassay against
Systematic phytochemical investigations on Abies delavayi afforded 110 compounds, including 49 terpenoids, 13 lignans, 20 flavonoids, three coumarins, and 25 other chemical constituents. By detailed analysis of one- and two-dimensional NMR spectroscopic and high-resolution mass spectrometric data,
Twenty-five new (abiesadines A-Y, 1-25) and 29 known (26-54) diterpenes were isolated from the aerial parts of Abies georgei. Abiesadine A (1) is a novel 8,14-seco-abietane, while abiesadine B (2) is a novel 9,10-seco-abietane. The structures of the new compounds were established on the basis of