Diterpenoid Alkaloids from Delphinium tatsienense.

Three new C-diterpenoid alkaloids, along with twenty-two known alkaloids, were isolated from the whole herbs of Delphinium tatsienense. The new alkaloids include a vakognavine-type C-diterpenoid alkaloid, designated as tatsienenseine A (), and two hetisine-type C-diterpenoid alkaloids, designated as tatsienenseines B () and C (). Their structures were elucidated by IR, HR-ESI-MS, 1D- and 2D-NMR analyses. [ABSTRACT FROM AUTHOR]