A new benzophenanthridines derivative from Dactylicapnos scandens and its chemotaxonomic significance

Abstract

The comprehensive phytochemical investigation on the roots of Dactylicapnos scandens led to isolation of a new benzophenanthridines derivative dactylketone (1), as well as seventeen known compounds: three benzophenanthridines (2–4), eight aporphines (5–12), one protopines (13), and other alkaloids (14–18). The chemical structures of these compounds were characterized by interpretation of NMR and MS spectroscopic and single-crystal X-ray diffraction data. The obtained results showed the abundance of isoquinoline alkaloids in D. scandens. Among them, compounds 1, 3–5 and 14–18 were identified and reported from the genus Dactylicapnos for the first time, while aporphines 8–12 were previously obtained only from D. scandens. The chemotaxonomic significance of these isolated compounds was also discussed.