isolation and characterization of fatty acid derivatives from the stem barks of albizia amara (fabaceae), sudanese medicinal plant

In this work, four fatty acid derivatives including, methyl tritriacont17en1-oate 1, (9z, 12z)-ethyl octadeca-9,12-dienoate 2, stearic acid 3, and 21-acetyl tetracosanoic acid 4 were isolated from acetone extract of the stem barks of albizia amara by chromatographic separation [tlc and cc]. the structures of the isolated compounds were established on the basis of extensive spectroscopic studies including 1d, 2dnm, and ms analysis, and compared with literature. compound 1, 2 and 3 were reported first time from the albizia genus and compound 4 was a new phytoconstituent isolated for the first time from plant sources.