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Three new C20‐diterpenoid alkaloids, along with twenty‐two known alkaloids, were isolated from the whole herbs of Delphinium tatsienense. The new alkaloids include a vakognavine‐type C20‐diterpenoid alkaloid, designated as tatsienenseine A (1), and two hetisine‐type C20‐diterpenoid alkaloids, designated as tatsienenseines B (2) and C (3). Their structures were elucidated by IR, HR‐ESI‐MS, 1D‐ and...
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 C19‐diterpenoid alkaloid, named yunnanenseine A (1), and two hetisine‐type C20‐diterpenoid alkaloids, named yunnanenseine B and C (2 and 3, resp.). Their structures were elucidated by detailed NMR‐spectroscopic studies.
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