Anthraquinone and naphthoquinone derivatives from the roots of Coptosapelta flavescens

Abstract

Investigation of the acetone and methanol extracts of the roots of Coptosapelta flavescens using various chromatographic techniques led to the isolation of four anthraquinones (1 and 3-5) and one naphthoquinone (2). 1,4-Dimethoxy-2-methylanthraquinone (1) and 2-amino-3-methoxycarbonyl-1,4- naphthoquinone (2) are reported as natural compounds for the first time. This is the first report on the phytochemistry and biological activity of compounds from C. flavescens.