Diterpenoid alkaloids from Aconitum orientale

Abstract

Four new diterpenoid alkaloids demethyllappaconitine; 7,11,14-trihydroxy-2,13-dioxohetisane, 6,13,15-trihydroxyhetisane and N-deethyldelphatine, were isolated from Aconitum orientale, in addition to the previously known compounds, lappaconitine, lycoctonine and browniine. The structures of the new and the known alkaloids were established from spectral data.