Two new pyranoanthraquinones from the root of Rennellia elliptica Korth. (Rubiaceae)

Publication date: June 2016 Source:Phytochemistry Letters, Volume 16 Author(s): Che Puteh Osman, Nor Hadiani Ismail, Agustono Wibowo, Rohaya Ahmad Two new pyranoanthraquinones, rennellianone A (1) and rennelianone B (2) along with four known compounds, alizarin-1-methyl ether (3), scopoletin (4), 4-hydroxy-3,5-dimethoxybenzaldehyde (5) and 3b-acetateoleanan-13b, 28-lactone (6) were isolated and characterized from the root extract of Rennellia elliptica. The structures were established based on spectroscopic data including HR-ESI–MS, 1D and 2D NMR. Triterpenoid lactone (6) is reported for the first time from family Rubiaceae. Graphical abstract

Source: Phytochemistry Letters - May 9, 2016 Category: Chemistry Source Type: research