Study on Fatty Acid Esters from Roots of Amaranthus hybridus Linn

Amaranthus hybridus Linn. (Amaranthaceae) commonly known as smooth pigweed is an erect branched annual herb found throughout tropical and temperate regions of India as a common weed in fields and wastelands. New fatty acid esters were isolated from ethanolic extract of roots of Amaranthus hybridus Linn. (Amaranthaceae). The roots of Amaranthus hybridus Linn. were collected from the campus of Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India in July 2008. The structures of these compounds were established on the basis of the detailed chemical reaction and spectral analysis as 8'-hydroxynonadecanyl-n-decanoate (1), n-docos-11-enoic acid (2), n-pentacosonyl-n-octadec-9-enoate (3), n-tricosanyl-n-octadec-9,12-dienoate (4). In the present paper, the isolation and structure elucidation of the four components were demonstrated.