Nitrogen-containing compounds from Solanum lyratum Thunb

The medicinal plant Solanum lyratum Thunb（Solanaceae）is distributed widely in China. The present phytochemical investigation on S. lyratum led to the isolation of ten known Nitrogen-containing compounds. Compounds 1, 2, 3, 6, 9 were isolated for the first time from this plant and compounds 8,10 were obtained for the first time from Solanum. Compound 10 was isolated from Solanaceae family and obtained outside from Loganiaceae family for the first time. This has important chemotaxonomic significance on solanaceae.