Triterpenoids from the Stem Bark of Avicennia officinalis

Abstract

The triterpinoids, betulinic acid, lupeol and betulinaldehyde, were isolated from the ethyl acetate extract of the stem bark of Avicennia officinalis (Avicenniaceae) by a combination of column and preparative thin-layer chromatography over silica gel. The structures of these compounds were determined by spectroscopic analysis (UV, IR, ¹H NMR, ¹³CNMR and EIMS). This is the first report of a systematic phytochemical investigation and the presence of these triterpoids from this plant.