A new diterpenoid alkaloid, hemsleyanaine (1), was isolated from the roots of Aconitum hemsleyanum Pritz.Its structure was elucidated as 8 acetyl 14 benzoyl ezochasmanine on the basis of chemical and spectral evidence.Together with this new compound there known diterpenoid alkaloids, chasmanine (2), indaconitine (3) and talatisamine (4), were isolated and identified.
Four diterpenoid alkaloids were obtained form the roots of Aconitum kongboense Lauener.Among them, one is a new alkaloid, kongboensine (1), and the structure has been elucidated by spectral evidence.The others were identified as guayewuanine A (2), indaconitine (3) and talatisamine (4) respictevely.2 and 3 were isolated from this plant for the first time.
