Two compounds (3 and 10) were isolated from the aerial parts of Sida spinosa L. Their structures have been established as glyceryl-l-eicosanoate and 20-hydroxy, 24-hydroxymethylecdysone by ID and 2D-NMR techniques. In addition 12 known compounds (1, 2, 4-9 and 11-14) have been isolated and identified. (C) 2003 Published by Elsevier Science Ltd.