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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]

Three new diterpenoid alkaloids, along with eleven known alkaloids, were isolated from the whole herbs of Delphinium yunnanense. The new alkaloids include a rearranged-type C-diterpenoid alkaloid, named yunnanenseine A (), and two hetisine-type C-diterpenoid alkaloids, named yunnanenseine B and C ( and , resp.). Their structures were elucidated by detailed NMR-spectroscopic studies. [ABSTRACT FROM AUTHOR]

Further investigation on the roots of Aconitum piepunense led to the isolation of a novel bis-diterpenoid alkaloid designated as piepunine (). Its structure was established by extensive interpretation of its 1D- and 2D-NMR data, high-resolution ESI-MS, and IR spectra. Piepunine represents the first example of an atisine-denudatine-type bis-diterpenoid alkaloids. [ABSTRACT FROM AUTHOR]