Three new C19-diterpenoid alkaloids from Delphinium tianshanicum W. T. Wang

Three new C19-diterpenoid alkaloids, tianshanisine (1), tianshanine (2) and tianshanidine (3), together with six known C19-diterpenoid alkaloids (4-9) were isolated from the whole herb of Delphinium tianshanicum W. T. Wang. Their structures were established on the basis of spectroscopic analyses, including HR-ESI-MS and 1D and 2D NMR.