Withanolid amine and nicotine from Dunalia spinosa (Solanaceae) (Amino-witanólido y nicotina de Dunalia spinosa (Solanaceae))

A new withanolid amine was isolated from Dunalia spinosa (Solanaceae). Its relative stereochemistry was determined using FT-IR, 1H and 13C NMR spectroscopies and high resolution mass spectrometry. Nicotine was also isolated; chemotaxonomic and archaeological implications are discussed.