Isoflavonoids and norneolignan from Caragana changduensis

Publication date: June 2017 Source:Phytochemistry Letters, Volume 20 Author(s): Lina Guo, Xuedong Yang, Xiaodong Sun, Xun Wu Two new isoflavonoids, named 6,7,2′-trihydroxy-4′-methoxyisoflavone (1), 7,3′-dimethoxy-5′-hydroxyisoflavone (2), one new norneolignan, named (8S)-2,4-dihydroxy-8-hydroxymethyl-4′-methoxydeoxybenzoin (3); together with six known compounds, methyl 4-hydroxylbenzoate (4), ethyl 4-hydroxybenzoate (5), piceatannol (6), cararosin A (7), 2,4-dihydroxybenzoate (8), and 6,7,4′-trihydroxyisoflavone (9) were isolated from the red heartwood in the rhizomes of Caragana changduensis by using chromatographic methods Their structures were determined by extensive spectroscopic analysis and comparison of their spectral data with previous reported data. Graphical abstract

Source: Phytochemistry Letters - May 3, 2017 Category: Chemistry Source Type: research