Summary
The root of Lonchocarpus longifolius (Benth.) Ducke, syn. Derris longifolia Benth. (Leguminosae-Papilionoideae). from the vicinity of Manaus, Amazonas, contains rotenone, 12a-hydroxyrotenone and 6a, 12a-dehydrorotenone, besides deguelin and 12a-hydroxydeguelin (tephrosin).