A novel anthraquinone from Morinda lucida Benth (Rubiaceae)

Abstract

Morinda lucida (Rubiaceae) is a plant used in West African’s traditional medicine for the treatment of various diseases. The Phytochemical investigation of its stem barks led to the isolation of eight anthraquinone derivatives. Among these compounds, one is a new structure: 2-acetyl-1-hydroxyanthraquinone (8). The others were known from this plant: damnacanthal (1), 3-hydroxy-2-carbaldehyde-anthraquinone (2), 1-hydroxy-2-methyl-anthraquinone (3), nordamnacanthal (4), rubiadin-1-methyl ether (5), morindone (6), tectoquinone (7). Their structures were established according to their spectral data (NMR 1D and 2D, MS).