Project supported by the Doctoral Foundation of the Ministry of Education,China(2002-2004,No.20010610047).
Three new C19-diterpenoid alkaloids, giraldines A (1), B (3) and C (4), were isolated from the roots of Delphinium giraldii Diels, together with three known C19-diterpenoid alkaloids, di-hydrogadesine (5), tatsiensine...