Isolation and Characterization of Fatty Acid Derivatives from the Stem Barks of Albizia Amara (Fabaceae), Sudanese Medicinal Plant

Abstract

In this work, four fatty acid derivatives including, methyl tritriacont-17-en-1-oate <strong>1</strong>, (9<em>Z</em>, 12<em>Z</em>)-ethyl octadeca-9,12-dienoate<strong> 2</strong>, stearic acid <strong>3,</strong> and 21-acetyl tetracosanoic acid <strong>4</strong> were isolated from acetone extract of the stem barks of <em>Albizia amara</em> by chromatographic separation [TLC and CC]. The structures of the isolated compounds were established on the basis of extensive spectroscopic studies including 1D, 2D-NM, and MS analysis, and compared with literature. Compound<strong> 1</strong>, <strong>2</strong> and <strong>3</strong> were reported first time from the <em>Albizia </em>genus and compound <strong>4</strong> was a new phytoconstituent isolated for the first time from plant sources.